Thèses : « Visual analisy »

1

Davies, Jim. « Constructive Adaptive Visual Analogy ». Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4775.

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Visual knowledge appears to be an important part of problem solving, but the role of visual knowledge in analogical problem solving is still somewhat mysterious. In this work I present the Constructive Adaptive Visual Analogy theory, which claims that visual knowledge is helpful for solving problems analogically and suggests a mechanism for how it might be accomplished. Through evaluations using an implemented computer program, cognitive models of some of the visual aspects of experimental participants, and a psychological experiment, I support four claims: First, visual knowledge alone is sufficient for transfer of some problem solving procedures. Second, visual knowledge facilitates transfer even when non-visual knowledge might be available. Third, the successful transfer of strongly-ordered procedures in which new objects are created requires the reasoner to generate intermediate knowledge states and mappings between the intermediate knowledge states of the source and target analogs. And finally, that visual knowledge alone is insufficient for evaluation of the results of transfer.

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Montobbio, Noemi <1992&gt. « A metric model of the visual cortex ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amsdottorato.unibo.it/9101/1/montobbio_noemi_tesi.pdf.

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The purpose of this thesis is the development of a model for the geometry of the connectivity of the primary visual cortex (V1), by means of functional analysis tools on metric measure spaces. The metric structure proposed to describe the internal connections of V1 implements a notion of correlation between neurons, based on their feature selectivity: this is expressed through a connectivity kernel that is directly induced by the local feature analysis performed by the cells. Such kernel carries a geometrical structure consistent with the well-known properties of long-range horizontal connections in V1, and it is compatible with the perceptual rules synthesized by the concept of association field. Moreover, its construction can be applied to banks of filters not necessarily obtained through a group representation, and possibly only numerically known. This model is then applied to insert biologically inspired connections in deep learning algorithms, to enhance their ability to perform pattern completion in image classification tasks. The main novelty in our approach lies in its ability to recover global geometric properties of the functional architecture of V1 without imposing any parameterization or invariance, but rather by exploiting the local information naturally encoded in the behavior of single V1 neurons in presence of a visual stimulus.

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Andery, Gabriel de Faria. « Integrando projeções multidimensionais à analise visual de redes sociais ». Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-06102010-111345/.

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Há várias décadas, pesquisadores em ciências sociais buscam formas gráficas para expressar as relações humanas na sociedade. O advento do computador e, mais recentemente, da internet, possibilitou o surgimento de um campo que tem despertado a atenção de estudiosos das áreas de visualização de informação e de ciências sociais, o da visualização de redes sociais. Esse campo tem o potencial de revelar e explorar padrões que podem beneficiar um número muito grande de aplicações e indivíduos em áreas tais como comércio, segurança em geral, redes de conhecimento e pesquisa de mercado. Grande parte dos algoritmos de visualização de redes sociais são baseados em grafos, destacando relacionamentos entre indivíduos e grupos de indivíduos, mas dando pouca atenção aos seus demais atributos. Assim, este trabalho apresenta um conjunto de soluções para representar e explorar visualmente redes sociais levando em consideração tais atributos. A primeira solução faz uso de redes heterogêneas, onde tanto indivíduos quanto comunidades são representados no grafo; a segunda solução utiliza técnicas de visualização baseadas em projeção multidimensional, que promovem o posicionamento dos dados no plano de acordo com algum critério de similaridade baseado em atributo; e a última solução coordena múltiplas visões para focar rapidamente em regiões de interesse. Os resultados indicam que as soluções proveem um poder de representação e identificação de conceitos não facilmente detectados por formas convencionais de visualização e exploração de grafos, com indícios fornecidos através dos estudos de caso e da realização de avaliações com usuários. Este trabalho fornece um estudo das áreas de visualização em grafos para a análise de redes sociais bem como uma implementação das soluções de integração da visualização em redes com as projeções multidimensionais
For decades, social sciences researchers have searched for graphical forms to express human social relationships. The development of computer science and more recently of the Internet has given rise to a new field of research for visualization and social sciences professionals, that of social network visualization. This field can potentially offer new opportunities in reveal new patterns that can benefit a large number of applications and individuals in fields such as commerce, security, knowledge networks and marketing. A large part of social network visualization algorithms and systems relies on graph representations, highlighting relationships amongst individuals and groups of individuals, but mostly neglecting the other available attributes of individuals. Thus, this work presents a set of tools to represent and explore social networks visually, taking into consideration the attributes of the nodes. The first technique employs heterogeneous networks, where both individuals and communities are represented in the graph; the second solution uses visualization techniques based on multidimensional projection, which promote the placement of data in the plane according to some similarity criterion based on attribute; still another proposed technique coordinates multiple views in order to speed up focus in regions of interest in the data sets. The results indicate that the solutions promote high degree of representation power and that concept identification not easily obtained via other methods is possible; the evidence comes from case studies as well as a user evaluation. This work includes a study in the area of graph visualization for social network analysis as well as a system implementing the proposed solutions, that integrate network visualization and multidimensional projections to extract patterns from social networks

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Eriksson, Edlund Lova. « En visuell analys av en klimatkampanj från Greenpeace ». Thesis, Malmö universitet, Fakulteten för kultur och samhälle (KS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-22491.

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Denna uppsats består av en bildanalys av en visuell kampanj bestående av fem bild-par med två bilder var, eller diptyker, skapad av Greenpeace. Genom att granska faktorer som visuellt arbetsminne, symbolisk interaktion, socialisering, retoriska tilltal samt bildspråk och applicera dessa på en visuell kommunikation kan en med större enkelhet se hur dessa arbetar och interagerar. På så sätt får vi veta hur avsändaren kan använda sig av olika kommunikationsmetoder för att förmedla ett budskap likväl som hur mottagaren kan tänkas ta emot och tolka detta. Greenpeace har använt sig av etos, logos och patos för att föra fram sitt budskap, samt en kunskap om sin målgrupps generella socialisering för att tilltala de konnotationer som målgruppen innehar gällande klimatkrisen och dess konsekvenser.Genom att inte inkludera någon text utan istället fokusera på dessa konnotationer och tala till betraktarens intellekt så uppmanar Greenpeace till personlig uppfattning och tolkning. De har även använt sig av starka färger, kontraster och intressanta kompositioner för att fånga åskådarens blick, uppmärksamhet och intresse.
This essay consists of a analysis of a visual campaign consisting of five pairs of images with two images each, so called diptychs, created by Greenpeace. By examining factors like visual working memories, symbolic interaction, socialization, communication methods and visual language and applying these onto a visual communication one could with more ease see how these work and interact. Like this we find out how the sender could make use of different methods of communication to mediate a message as well as how the recipient could come to receive and interpret this. Greenpeace has used ethos, logos and pathos to deliver their message, and a knowledge about their target audiences general socialization to appeal to those connotations that the audience have about the climate crisis and its consequences. By not including a text but instead focus on these connotations and speaking to the observers intellect, Greenpeace calls for personal perception and interpretation. They have also used bright colors, contrasts and interesting compositions to catch the observers eye, attention and interest.

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Chekroud, Karim. « Analyse du phénotype visuel d'un modèle de souris déficiente pour la protéine FATP1 ». Thesis, Montpellier 1, 2010. http://www.theses.fr/2010MON1T015.

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Chez les vertébrés, la perception de la lumière est possible grâce à la transformation de l'énergie des photons en un signal électrochimique dans les photorécepteurs. La photo-isomérisation du chromophore RAL-11-cis en RAL-tout-trans déclenche une cascade d'événements de transduction du signal et conduit à la perte de la sensibilité à la lumière des photorécepteurs, un processus de recyclage du chromophore visuel entre alors en jeu afin de rétablir cette sensibilité, c'est le cycle visuel de rétinoïdes. Le cycle visuel s'effectue dans les photorécepteurs et l'épithélium pigmentaire rétinien et fait intervenir plusieurs protéines. L'étape limitante de ce cycle est catalysée par la protéine spécifique de l'EPR RPE65. Mieux comprendre la régulation de cette étape permettra d'ouvrir des pistes thérapeutiques pour différentes pathologies liées l'activité du cycle visuel. Notre laboratoire a montré que FATP1, une protéine du métabolisme lipidique, inhibe l'activité de RPE65 in vitro. Dans ce travail, nous avons évalué l'effet de l'absence de FATP1 sur l'activité du cycle visuel et la fonction visuelle dans un modèle murin. La souris ko FATP1 est caractérisée par une baisse des amplitudes des ondes a et b de l'ERG, un retard de régénérescence de l'ERG et d'accumulation de rétinylesters après éblouissement. La formation du RAL-11-cis reste comparable à celle des souris sauvages. Les souris FATP-/- montrent une plus grande susceptibilité aux effets du vieillissement : des anomalies de structure ont été observées au niveau des photorécepteurs, de la membrane de Brüch et de la choroïde, sans accumulation excessive de lipides ou de lipofuscine ni de dégénérescence rétinienne. La perturbation de la fonction visuelle observé en l'absence de FATP1 chez la souris pourrait avoir un effet plus accru chez l'homme qui vie plus longtemps et dont la rétine reçoit plus de lumière. En conclusion, FATP1 pourrait être une composante importante pour le vieillissement de la rétine chez l'homme
In vertebrates, perception of light is made possible through the conversion of photon energy into an electrochemical signal in photoreceptors. The photo-isomerization of the chromophore 11-cis-RAL into all-trans-RAL triggers a cascade of signal transduction and leads to loss of light sensitivity of photoreceptors, thus, a recycling process of chromophore called the rétinal visual cycle is involved to restore this sensitivity. The visual cycle takes place in the photoreceptors and retinal pigment epithelium and involves several proteins. The limiting step of this cycle is catalyzed by RPE-specific protein RPE65. Better understanding the regulation of this step might open up new ways for treatment of various pathologies related to the visual cycle activity. Our laboratory has shown that FATP1, a protein involved in lipid metabolism, inhibits the activity of RPE65 in vitro. In this study, we evaluated the effect of the lack of FATP1 on the activity of the visual cycle and visual function in a mouse model. FATP1 ko mice are characterized by lower a and b amplitudes of the elctroretinogram, delayed ERG and retinylesters accumulation recovery after bleache. 11-cis-RAL synthesis rates are similar to those of wt mice. FATP1 ko mice show a greater susceptibility to the aging effects: structural abnormalities were observed in the photoreceptors, Bruch's membrane and choroid without excessive accumulation of lipid or lipofuscin or retinal degeneration. The disturbance of visual function which accopagne the lack of FATP1 in mice could have a more increased effect in human who live longer and wich the retina receives more light. In conclusion, FATP1 might be an important component for the aging of the retina in humans

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Williams, Jason B. « The role of visual analogy in information visualisation ». Thesis, Loughborough University, 2002. https://dspace.lboro.ac.uk/2134/36110.

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This thesis is inspired by the growing domain of information visualisation, and the potentially open-ended choice of visual representations which can be used to represent any given abstract concept. Such a potentially unlimited choice means that the question of choosing an appropriate visual form is not insubstantial. This thesis therefore attempts to explore how to usefully inform such a choice through the concept of visual analogy. To this end a series of multidimensional icons are developed which differ in terms of level of analogy for a given concept. The practical studies outlined then set out first to confirm this difference in practical terms and then explore the implications of using different levels of explicit visual analogy in tasks appropriate to the use of multidimensional icons. The results reveal that a continuum of 'degree' of analogy can be practically established which increasingly constrains the interpretation users assign to representations as the level of analogy increases.

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Qin, Lei. « Online machine learning methods for visual tracking ». Thesis, Troyes, 2014. http://www.theses.fr/2014TROY0017/document.

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Nous étudions le problème de suivi de cible dans une séquence vidéo sans aucune connaissance préalable autre qu'une référence annotée dans la première image. Pour résoudre ce problème, nous proposons une nouvelle méthode de suivi temps-réel se basant sur à la fois une représentation originale de l’objet à suivre (descripteur) et sur un algorithme adaptatif capable de suivre la cible même dans les conditions les plus difficiles comme le cas où la cible disparaît et réapparait dans le scène (ré-identification). Tout d'abord, pour la représentation d’une région de l’image à suivre dans le temps, nous proposons des améliorations au descripteur de covariance. Ce nouveau descripteur est capable d’extraire des caractéristiques spécifiques à la cible, tout en ayant la capacité à s’adapter aux variations de l’apparence de la cible. Ensuite, l’étape algorithmique consiste à mettre en cascade des modèles génératifs et des modèles discriminatoires afin d’exploiter conjointement leurs capacités à distinguer la cible des autres objets présents dans la scène. Les modèles génératifs sont déployés dans les premières couches afin d’éliminer les candidats les plus faciles alors que les modèles discriminatoires sont déployés dans les couches suivantes afin de distinguer la cibles des autres objets qui lui sont très similaires. L’analyse discriminante des moindres carrés partiels (AD-MCP) est employée pour la construction des modèles discriminatoires. Enfin, un nouvel algorithme d'apprentissage en ligne AD-MCP a été proposé pour la mise à jour incrémentale des modèles discriminatoires
We study the challenging problem of tracking an arbitrary object in video sequences with no prior knowledge other than a template annotated in the first frame. To tackle this problem, we build a robust tracking system consisting of the following components. First, for image region representation, we propose some improvements to the region covariance descriptor. Characteristics of a specific object are taken into consideration, before constructing the covariance descriptor. Second, for building the object appearance model, we propose to combine the merits of both generative models and discriminative models by organizing them in a detection cascade. Specifically, generative models are deployed in the early layers for eliminating most easy candidates whereas discriminative models are in the later layers for distinguishing the object from a few similar "distracters". The Partial Least Squares Discriminant Analysis (PLS-DA) is employed for building the discriminative object appearance models. Third, for updating the generative models, we propose a weakly-supervised model updating method, which is based on cluster analysis using the mean-shift gradient density estimation procedure. Fourth, a novel online PLS-DA learning algorithm is developed for incrementally updating the discriminative models. The final tracking system that integrates all these building blocks exhibits good robustness for most challenges in visual tracking. Comparing results conducted in challenging video sequences showed that the proposed tracking system performs favorably with respect to a number of state-of-the-art methods

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Baspinar, Emre <1988&gt. « Minimal Surfaces in Sub-Riemannian Structures and Functional Geometry of the Visual Cortex ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amsdottorato.unibo.it/8661/7/thesis_baspinar_for_submission.pdf.

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We develop geometrical models of vision consistent with the characteristics of the visual cortex and study geometric flows in the relevant model geometries. We provide a novel sub-Riemannian model of the primary visual cortex, which models orientation-frequency selective phase shifted cortex cell behavior and the associated horizontal connectivity. We develop an image enhancement algorithm using sub-Riemannian diffusion and Laplace-Beltrami flow in the model framework. We provide two geometric models for multi-scale orientation map and orientation-frequency preference map construction which employ Bargmann transform in high dimensional cortical spaces. We prove the uniqueness of the solution to sub-Riemannian mean curvature flow equation in the Heisenberg group geometry. An iterative diffusion process followed by a maximum selection mechanism was proposed by Citti and Sarti in the sub-Riemannian setting of the roto-translation group. They conjectured that this two-fold procedure is equivalent to a mean curvature flow. However a complete proof was missing, even in the Euclidean setting. We prove in the Euclidean setting that this two fold procedure is equivalent to mean curvature flow.

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Belvedere, Danilo. « Analisi, Sviluppo e Sperimentazione di Sistemi di Visual Inspection in Contesti Industriali ». Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22530/.

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Questa tesi è stata redatta durante il tirocinio svolto presso IBM Italia S.p.A (Bologna) e in collaborazione con l’azienda Automobili Lamborghini S.p.A. In questa tesi si approfondiscono le tematiche legate al tema della Visual Inspection, che racchiude un insieme di metodi di computer vision impiegati per il controllo qualità di prodotti e/o step di processi in ambiente industriale attraverso verifiche visive. Grazie alle più recenti tecniche di Machine Learning nell’ambito dei sistemi di Computer Vision oggi è possibile sviluppare sistemi in grado di apprendere costantemente il concetto di “difetto” apportando sostanziali miglioramenti in una miriade di ambienti e al contempo ampliando la platea degli utilizzatori industriali di queste tecniche. Avere la possibilità di delegare ad una macchina il cruciale compito delle ispezioni visive non solo riduce in maniera netta i costi del settore di controllo qualità ma garantisce all’azienda anche il riconoscimento di qualità ed eccellenza da parte dei clienti. In questa tesi verranno analizzati i principali software di Visual Inspection presenti nell’industria: si valuteranno le performance di piccole aziende specializzate in sistemi di visual inspection e sistemi proposti da grandi aziende come Microsoft, Amazon, Google ed IBM per poi spostarsi su alcuni casi di studio reale sviluppati sia in ambiente Open Source che con gli strumenti messi a disposizione da IBM Italia durante questo tirocinio. Nell’ultimo capitolo della tesi verrà trattato un caso di studio reale affrontato in collaborazione con l’azienda Lamborghini S.P.A con cui ho avuto modo di sperimentare le tecniche apprese durante questa esperienza in un caso di studio industriale.

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Maczyta, Léo. « Dynamic visual saliency in image sequences ». Thesis, Rennes 1, 2020. http://www.theses.fr/2020REN1S046.

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Les travaux de la thèse portent sur l'estimation de la saillance du mouvement dans des séquences d'images. Dans une première partie, nous avons traité un sujet très peu abordé: la détection des images présentant un mouvement saillant. Pour cela, nous nous appuyons sur un réseau de neurones convolutif et sur la compensation du mouvement de la caméra. Dans une seconde partie, nous avons conçu une méthode originale d'estimation de cartes de saillance du mouvement. Cette méthode ne requiert pas d'apprentissage. L'indice de saillance est obtenu par une étape d'inpainting du flot optique, suivie d'une comparaison avec le flot initial. Dans un troisième temps, nous nous sommes intéressés à l'estimation de la saillance de trajectoires pour appréhender une saillance progressive. Nous construisons une méthode faiblement supervisée s'appuyant sur un réseau auto-encodeur récurrent, qui représente chaque trajectoire avec un code latent. Toutes ces méthodes ont été validées sur des données de vidéo réelles
Our thesis research is concerned with the estimation of motion saliency in image sequences. First, we have defined an original method to detect frames in which a salient motion is present. For this, we propose a framework relying on a deep neural network, and on the compensation of the dominant camera motion. Second, we have designed a method for estimating motion saliency maps. This method requires no learning. The motion saliency cue is obtained by an optical flow inpainting step, followed by a comparison with the initial flow. Third, we consider the problem of trajectory saliency estimation to handle progressive saliency over time. We have built a weakly supervised framework based on a recurrent auto-encoder that represents trajectories with latent codes. Performance of the three methods was experimentally assessed on real video datasets

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Sella, Stefano <1993&gt. « Analisi comparativa nell’uso del visual web design in siti web italiani e giapponesi ». Master's Degree Thesis, Università Ca' Foscari Venezia, 2019. http://hdl.handle.net/10579/14763.

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L’utilizzo di Internet è cresciuto esponenzialmente negli ultimi decenni e la sua diffusione a livello globale ha comportato una maggiore attenzione all’importanza della comunicazione interculturale. Questo elaborato indaga sulle sostanziali differenze visive in selezionati siti web giapponesi posti a confronto con pagine internet italiane della stessa natura. In particolare si vuole analizzare la relazione che intercorre tra la cultura dei due Paesi e la struttura del layout impiegato nei siti web, considerando il diverso approccio dell’utente alla navigazione intuitiva di Internet. Per tale scopo è stato utilizzato il modello delle sei dimensioni ideato dall’antropologo tedesco G. Hofstede nella declinazione studiata da Marcus e Gould sull’applicabilità ad Internet e lo studio sul contesto dell’antropologo E.T. Hall con le implicazioni nella comunicazione sul web studiata da E. Würtz. Questi modelli verranno usati solo come mezzo per capire, confrontare e differenziare le singole culture in relazione ad una serie di concetti di progettazione Web. Verranno quindi presi in esame i siti più visitati dei due Paesi secondo i siti web di Alexa, SimilarWeb e SEMrush: per il settore food il sito di McDonald, per il settore e-commerce il sito di Amazon e di Rakuten e infine per il settore informazione il sito di Yahoo!.

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Lorenset, Caroline Chioquetta. « Visual and lexicogrammatical analysis of websites of women`s magazines ». reponame:Repositório Institucional da UFSC, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/94025.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Letras/Inglês e Literatura Correspondente, Florianópolis, 2010
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Critical discourse analysis focuses on different types of media texts as an object of investigation, emphasizing the relation between language and social context. This study aims to investigate verbal and visual aspects of articles retrieved from websites of women's magazines from Brazil (Nova) and from the United States (Cosmopolitan). Articles were chosen following specific characteristics: 1) the verbal references of the titles could mention women and men directly or indirectly, but had to talk about them or the relationship among them; 2) the images presented in the articles could be full-body or partial, as long as the reader could identify the subjects as "man" or "woman"; 3) the articles were retrieved from the section "Sex and love" or "Sexo e Amor" of the magazines' website, because they referred to the relationship among men and women, whether they were single or not. The articles were analyzed based on Systemic Functional Linguistics, Critical Discourse Analysis, Visual Grammar and gender studies. The conclusion suggests that a) women`s magazines' websites make use of strategic discourse to propose traditional behavior to women, which are constantly portrayed as the ones responsible for the success of their relationships; b) the authors establish an intimate relationship with the readers as a strategy to gain readers' trust and approval; c) the magazines studied, in general, are persuasive and strategic in their discourse to attract more readers and to propose an improvement in relationships overall; and that d) the authors expose their ideas as being more experienced and having more knowledge than the readers, as if they were sharing their feminine secrets with the readers. The present study, may, therefore, be seen as an initial step towards the understanding of multimodal reading in websites and readers' awareness of the bidirectional relation between language and context.
A Análise Crítica do Discurso tem como objeto de pesquisa diferentes tipos de textos midiáticos, dando ênfase à relação entre língua e contexto social. Este estudo tem como objetivo investigar aspectos verbais e visuais de artigos retirados de websites de revistas femininas do Brasil (Nova) e dos Estados Unidos (Cosmopolitan). Os artigos foram selecionados seguindo características específicas: 1) as referências verbais do título poderiam mencionar mulher e homem direta ou indiretamente, mas mencioná-los ou mencionar o relacionamento entre eles; 2) as imagens apresentadas em cada artigo poderiam representar os corpos dos participantes em parte ou na sua totalidade, conquanto que o leitor pudesse identificar os participantes como "homem" ou "mulher"; 3) os artigos foram retirados das seções "Sex and Love" e "Sexo e Amor" dos websites das revistas, pois estas seções se referem ao relacionamento entre homens e mulheres, sendo estes solteiros ou não. Os artigos analisados têm como base teórica a Análise Crítica do Discurso, a Linguística Sistêmico Funcional, Gramática Visual e estudos de gênero. A conclusão sugere que a) os websites das revistas femininas fazem uso de linguagem estratégica para propor um comportamento tradicional às mulheres, que são constantemente representadas como as responsáveis pelo sucesso de seus relacionamentos; b) os autores estabelecem uma relação íntima com os leitores como uma estratégia para ganhar a confiança e ser aprovados por eles; c) as revistas estudadas, em geral, são persuasivas em seus discursos para atrair mais leitores e para propor um melhoramento nos relacionamentos em geral; e que d) os autores expõem suas ideias como sendo mais experientes e sábios do que os leitores, como se estivessem compartilhando segredos femininos. O presente estudo, portanto, pode ser caracterizado como um passo inicial para o entendimento da leitura multimodal em websites, e também para uma conscientização da relação entre língua e contexto.

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Jain, Varun. « Visual Observation of Human Emotions ». Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GRENM006/document.

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Cette thèse a pour sujet le développement de méthodes et de techniques permettant d'inférer l'état affectif d'une personne à partir d'informations visuelles. Plus précisement, nous nous intéressons à l'analyse d'expressions du visage, puisque le visage est la partie la mieux visible du corps, et que l'expression du visage est la manifestation la plus évidente de l'affect. Nous étudions différentes théories psychologiques concernant affect et émotions, et différentes facons de représenter et de classifier les émotions d'une part et la relation entre expression du visage et émotion sousjacente d'autre part. Nous présentons les dérivées Gaussiennes multi-échelle en tant que descripteur dímages pour l'estimation de la pose de la tête, pour la détection de sourire, puis aussi pour la mesure de l'affect. Nous utilisons l'analyse en composantes principales pour la réduction de la dimensionalité, et les machines à support de vecteur pour la classification et la regression. Nous appliquons cette même architecture, simple et efficace, aux différents problèmes que sont l'estimation de la pose de tête, la détection de sourire, et la mesure d'affect. Nous montrons que non seulement les dérivées Gaussiennes multi-échelle ont une performance supérieure aux populaires filtres de Gabor, mais qu'elles sont également moins coûteuses en calculs. Lors de nos expérimentations nous avons constaté que dans le cas d'un éclairage partiel du visage les dérivées Gaussiennes multi-échelle ne fournissent pas une description d'image suffisamment discriminante. Pour résoudre ce problème nous combinons des dérivées Gaussiennes avec des histogrammes locaux de type LBP (Local Binary Pattern). Avec cette combinaison nous obtenons des résultats à la hauteur de l'état de l'art pour la détection de sourire dans le base d'images GENKI qui comporte des images de personnes trouvées «dans la nature» sur internet, et avec la difficile «extended YaleB database». Pour la classification dans la reconnaissance de visage nous utilisons un apprentissage métrique avec comme mesure de similarité une distance de Minkowski. Nous obtenons le résultat que les normes L1 and L2 ne fournissent pas toujours la distance optimale; cet optimum est souvent obtenu avec une norme Lp où p n'est pas entier. Finalement, nous développons un système multi-modal pour la détection de dépressions nerveuses, avec en entrée des informations audio et vidéo. Pour la détection de mouvements intra-faciaux dans les données vidéo nous utilisons de descripteurs de type LBP-TOP (Local Binary Patterns -Three Orthogonal Planes), alors que nous utilisons des trajectoires denses pour les mouvements plus globaux, par exemple de la tête ou des épaules. Nous avons trouvé que les descripteurs LBP-TOP encodés avec des vecteurs de Fisher suffisent pour dépasser la performance de la méthode de reférence dans la compétition «Audio Visual Emotion Challenge (AVEC) 2014». Nous disposons donc d'une technique effective pour l'evaluation de l'état dépressif, technique qui peut aisement être étendue à d'autres formes d'émotions qui varient lentement, comme l'humeur (mood an Anglais)
In this thesis we focus on the development of methods and techniques to infer affect from visual information. We focus on facial expression analysis since the face is one of the least occluded parts of the body and facial expressions are one of the most visible manifestations of affect. We explore the different psychological theories on affect and emotion, different ways to represent and classify emotions and the relationship between facial expressions and underlying emotions. We present the use of multiscale Gaussian derivatives as an image descriptor for head pose estimation, smile detection before using it for affect sensing. Principal Component Analysis is used for dimensionality reduction while Support Vector Machines are used for classification and regression. We are able to employ the same, simple and effective architecture for head pose estimation, smile detection and affect sensing. We also demonstrate that not only do multiscale Gaussian derivatives perform better than the popular Gabor Filters but are also computationally less expensive to compute. While performing these experiments we discovered that multiscale Gaussian derivatives do not provide an appropriately discriminative image description when the face is only partly illuminated. We overcome this problem by combining Gaussian derivatives with Local Binary Pattern (LBP) histograms. This combination helps us achieve state-of-the-art results for smile detection on the benchmark GENKI database which contains images of people in the "wild" collected from the internet. We use the same description method for face recognition on the CMU-PIE database and the challenging extended YaleB database and our results compare well with the state-of-the-art. In the case of face recognition we use metric learning for classification, adopting the Minkowski distance as the similarity measure. We find that L1 and L2 norms are not always the optimum distance metrics and the optimum is often an Lp norm where p is not an integer. Lastly we develop a multi-modal system for depression estimation with audio and video information as input. We use Local Binary Patterns -Three Orthogonal Planes (LBP-TOP) features to capture intra-facial movements in the videos and dense trajectories for macro movements such as the movement of the head and shoulders. These video features along with Low Level Descriptor (LLD) audio features are encoded using Fisher Vectors and finally a Support Vector Machine is used for regression. We discover that the LBP-TOP features encoded with Fisher Vectors alone are enough to outperform the baseline method on the Audio Visual Emotion Challenge (AVEC) 2014 database. We thereby present an effective technique for depression estimation which can be easily extended for other slowly varying aspects of emotions such as mood

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Thelander, Gustav. « Analyzing visual principles and elements in commercial game trailers ». Thesis, Luleå tekniska universitet, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69638.

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This research seeks to establish visual principles present in modern media and compare their usefulness. The visual principles will be explained and presented. Then they will be analyzed within two game trailers of commercial games. A correlation will then be extrapolated and then presented if the results create the presented and expected outcome.

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Grimm, Elisa Lidia. « A visual and lexicogrammatical analysis of advertisements in Nova and Cosmopolitan / ». Florianópolis, SC, 1999. http://repositorio.ufsc.br/xmlui/handle/123456789/80676.

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Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão.
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Boire, Jean-Yves. « Recueil et analyse des electrogrammes visuels ». Clermont-Ferrand 2, 1987. http://www.theses.fr/1987CLF2E382.

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Badrinarayanan, Vijay. « Probabilistic graphical models for visual tracking of objects ». Rennes 1, 2009. http://www.theses.fr/2009REN1S014.

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This thesis puts forth graphical models for visual tracking in low and higher dimensional state spaces. For low dimensional tracking problems, such as object position tracking, a novel message switching/combination idea is introduced. Based on this concept and a new pseudo simulation viewpoint of point trackers a novel randomized feature point filter is developed. The message switching/combination ideas are then extended to construct multi-cue fusion based tracking with a set of simulation based filters. Employing pseudo simulation based point trackers and color based particle filters as their elementary filters these multi-cue fusion schemes track general objects in complex scenarios. Moving to higher dimensions, general multi-part tracking schemes are introduced. A network of local patch trackers are put to play in a stochastic simulation framework to track the position and other attributes of arbitrary objects. The difficult task of updating the process prior online is also performed under this simulation framework. Dealing with online update of the process prior enlarges the scope of application of the multi-part tracking model. A simple interactive multi-part tracking scheme is also discussed in this context. To the extent permitted by practicality, the contributions are evaluated quantitatively and/or qualitatively to convince the reader of their novelty, improvements and/or robustness. Detailed discussions of the highlights and drawbacks of the models are presented. Prospective extensions of the models based on empirical arguments and reflections on design are included
Cette thèse traite de l'utilisation de modèles de graphes pour le suivi probabiliste d'objets dans des espaces de petites et de plus grandes dimensions. Un nouveau schéma de commutation/combinaison de messages est proposé pour le cas des espaces de faible dimension, typiquement, le suivi de position. S'appuyant sur ce schéma, et sur une interprétation probabiliste du suivi par points d'intérêts, un nouveau filtre de suivi probabiliste basé sur un ensemble de points de suivi est développé. Le schéma est ensuite étendu à la construction d'un algorithme de suivi d'objets fusionnant plusieurs types d'observations, spécifiquement, le filtre probabiliste basé sur un ensemble de points de suivi et un filtre particulaire basé sur la couleur. Ce nouvel algorithme améliore la robustesse du suivi d'objets dans les scénarios complexes, en l'absence d'a priori sur la nature de l'objet suivi. Pour les espaces de plus grandes dimensions, où l'on cherche à suivre des attributs de position, d'échelle et éventuellement de forme d'un objet, des algorithmes de suivi par zones sont introduits. Ces algorithmes combinent, dans un cadre de simulation stochastique par méthodes de Monte-Carlo, plusieurs processus de suivi fonctionnant chacun sur une région d'un objet complexe, et font intervenir une mise à jour en ligne du modèle d'état. Un schéma de suivi faisant intervenir une interaction simple de l'utilisateur est également développé sur la même base. Dans la limite de ce qui est réalisable en pratique, les algorithmes de suivi développés sont évalués qualitativement et quantitativement afin de démontrer leur bénéfice, notamment en termes de robustesse, vis-à-vis de l'existant. Une analyse détaillée des forces et faiblesses des modèles utilisés est présentée. Enfin, les perspectives d'extension de ces modèles, s'appuyant sur des arguments empiriques, sont discutées, et une analyse a posteriori de la conception des modèles est présentée

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Barros, Ricardo Machado Leite de 1961. « Concepção e implementação de um sistema para analise cinematica de movimentos humanos ». [s.n.], 1997. http://repositorio.unicamp.br/jspui/handle/REPOSIP/275277.

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Orientador: Rene Brenzikofer
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Educação Fisica
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Resumo: Esta pesquisa consiste da concepção e implementação de um sistema para análise cinemática de movimentos humanos, baseado em registros de vídeo. O conceito orientador do sistema é apresentado. Problemas inerentes à análise cinemática tridimensional de movimentos são equacionados e soluções propostas. As soluções implementadas são testadas e exemplos de aplicação do sistema são mostrados. As características principais do sistema proposto são a independência em relação a equipamentos dedicados, a possibilidade de utilizar marcadores passivos e ativos sob condições experimentais diversas, a confiabilidade dos resultados, a simplicidade de operação e o baixo custo. Duas câmeras ou mais registram o movimento de interesse. As seqüências de imagens são digitalizadas e armazenadas no disco rígido do computador. Essas imagens são medidas e analisadas no software dedicado ao sistema, onde algoritmos de medição manual e automática estão disponíveis. No software estão implementadas ferramentas para busca automática de marcas, reconhecimento de padrões e processamento de imagens. A fim de permitir a análise tridimensional de movimentos, procedimentos foram implementados para calibração de câmeras, reconstrução de coordenadas, sincronização de registros para câmeras não sincronizáveis por hardware e avaliação da qualidade das aquisições
Abstract: This research consists in the conception and implementation of a system for kinematic analysis of human movements, based on video registers. The guide concept is presented. Problems inherent to the three-dimensional kinematic analysis of human movements are formulated and solutions proposed. The implemented solutions are tested and applied examples shown. The main features of the proposed system are the independence in relation to dedicated hardware, the possibility to use passive and active markers under distinct experimental condition, the goodness of the results, the simplicity to operate and the low cost. Two video cameras or more register the movement of interest. The image sequences are digitalised and saved on the hard disk. The images are measured and analysed in a dedicated software, where algorithms to manual and automatic measurement are available. In the software were implemented tools for automatic tracking of markers, pattern recognition and image processing. In order to allow the three-dimensional analysis of movements, procedures are implemented for cameras calibration, co-ordinates reconstruction, register synchronisation from non-synchronised cameras and the estimation of the goodness from results
Doutorado
Ciencia do Desporto
Doutor em Educação Física

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Boire, Jean-Yves. « Recueil et analyse des électrogrammes visuels ». Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37603090w.

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Nader, Georges. « Calcul du seuil de visibilité d’une distorsion géometrique locale sur un maillage et ses applications ». Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1239/document.

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Les opérations géométriques appliquées aux maillages 3D introduisent des dis torsions géométriques qui peuvent être visibles pour un observateur humain. Dans cette thèse, nous étudions l’impact perceptuel de ces distorsions. Plus précisément, notre objectif est de calculer le seuil à partir duquel les distorsions géométriques locales deviennent visibles. Afin d’atteindre notre but, nous définissons tout d’abord des caractéristiques perceptuelles pour les maillages 3D. Nous avons ensuite effectué une étude expérimentale des propriétés du système visuel humain (sensibilité au contraste et effet du masquage visuel) en observant un maillage 3D. Les résultats de ces expériences sont finalement utilisés pour proposer un algorithme qui calcule le seuil de visibilité relatif à une distorsion locale. L’algorithme proposé s’adapte aux différentes conditions d’affichage (résolution et taille de l’écran), d’illumination et au type de rendu. Enfin, nous montrons l’utilité d’un tel algorithme en intégrant le seuil de visibilité dans le pipeline de plusieurs opérations géométriques (ex: simplification, subdivision adaptative)
Geometric operations applied to a 3D mesh introduce geometric distortion in the form of vertex displacement that can be visible to a human observer. In this thesis, we have studied the perceptual impact of these geometric distortions. More precisely, our goal is to compute the threshold beyond which a local geometric distortion becomes visible. In order to reach this goal, we start by evaluating perceptually relevant properties on 3D meshes. We have then performed a series of psychophysical experiments in which we measured the visibility threshold relative to various properties of the Human Visual System (contrast sensitivity and visual masking). The results of these experiments allowed us to propose an algorithm that computes the visibility threshold relative to a local geometric distortion. This algorithm is capable of adapting to the different display condition of 3D meshes (resolution, display size, illumination condition and rendering). Finally, we showcase the utility of our work by integrating the developed perceptual method in several geometric operations such as mesh simplification and adaptive subdivision

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Laurentiz, Silvia Regina Ferreira de. « Contribuições dos meios de produção a linguagem visual : uma analise sintatica a pelos principios semioticos ». [s.n.], 1994. http://repositorio.unicamp.br/jspui/handle/REPOSIP/284181.

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Orientador: Marcius Freire
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Artes
Made available in DSpace on 2018-07-18T22:42:38Z (GMT). No. of bitstreams: 1 Laurentiz_SilviaReginaFerreirade_M.pdf: 6956019 bytes, checksum: 597eae10dc0dc4317baca4c10be79010 (MD5) Previous issue date: 1994
Resumo: Este trabalho investiga as contribuições dos Meios de Produção na Linguagem Visual. O foco principal está na pesquisa do potencial expressivo dos diferentes Meios e as inovações que eles possam patrocinar na evolução da Comunicação Humana. Trata-se de uma investigação no território dos processos comunicativos em si, no universo do signo. Foi adotado como método de pesquisa os principios da Semiótica de Charles Sanders Peirce. A escolha metodológica foi assim determinada pois é a Semiótica que possui atributos que melhor abrangem as expectativas diante do objeto estudado. Foi privilegiado o eixo sintático da Linguagem Visual por dois motivos. Primeiro, porque buscavam-se as especificidades visuais, e a melhor maneira de separá-Ias de outras propriedades, que não as visivas, era através da sintaxe da sua Linguagem. O segundo motivo é que na sintaxe está o maior potencial expressivo dos Meios Eletrônicos. Estes se destacam dos demais (os Artesanais e os Mecânicos) por pertencerem à nossa realidade histórica e despertarem interesses maiores. Pela observação do universo pesquisado, que perspassa os aspectos técnicos e cognitivos da comunicação, pode-se perceber que está ligado por dois terrenos, que são: o das questões referentes à Elaboraçào Mental da Linguagem e o das questões referentes aos Meios de Produção desta Linguagem. E como o signo habita nestas duas fronteiras, através dele serão encontrados os pontos comuns entre estes dois territórios. A análise sintática dos signos visuais pelos principios Semióticos determinou uma Classificaçào da Linguagem Visual. Os atributos especificos dos Meios de Produção foram reconhecidos através da Classificação apontada. Desta forma, este trabalho avalia a Linguagem Visual através dos principios Semióticosi atinge as contribuições dos Meios de sua Produçào; e, finalmente, propõe trabalhos orientados pelos processos cognitivos e pelas possibilidades expressivas dos Meios Eletrônicos, comprovando a teoria apresentada
Abstract: This work investigates the contributions of Production Medias in The Visual Language. The main focus is based on the search of the expressive potential of the different Medias and the innpvations they can provide in the evolution of Human Communications. The investigation deals with the processes of communication territories: the sign's uni verse. The search methods adopted herein are the Charles Sanders peirce Semiotic principIes. The methodological choice was determined because the Semiotic system has the attributions that mostly comprise expectations about the object in study. The syntatical analysis of the Visual Language was priviledged by the following two reasons: First, as the Visual specificalness was searched for, the best way achieved was by means of the syntatical analysis of its language. The second motive is the syntax's great expressive potential of Eletronic Medias. These differ from the others (Handcraft and Mechanic Medias) as they belong to our historical reality and arise more interest. According to observations of the universe searched compreending technical and cognitive aspects of communication, one notices their connection by two territories, such as: The questions referring to Mind Elaboration Language and those related to Production Media of this language. As the two above frontiers are the habitat of the sign, the common points will be found therein. The visual sign's syntatic analysis determined, through the semiotic principIes, the Visual Language Classification. The specific attributes of the Production Media were recognized through that Classification. By this way, this work estimates the Visual Language by semiotic principIes; attains the contributions of its Production Media and, finally, offers experiments directed by cognitive processes and expressive possibilities of Eletronic media, confirming the hereby presented theory
Mestrado
Mestre em Multimeios

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Rodrigues, Jose Augusto. « Analise visual do potencial cariostatico in vitro de materiais restauradores associados a aplicação de dentifricios ». [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/289131.

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Orientadores : Giselle Maria Marchi Baron, Monica Campos Serra
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
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Resumo: A prevenção ou paralisação de lesões cariosas adjacentes às restaurações pode ser aIcançada pela correta remoção de placa e utilização de fluoretos tópicos. Para pacientes de alto risco, é ainda recomendado o uso de materiais restauradores cariostáticos, embora ainda não se conheça o verdadeiro efeito da sua associação aos fluoretos. O objetivo deste trabalho foi avaliar, in vitro, o efeito cariostático de 6 materiais restauradores contendo ou não flúor associados à aplicação de dentifrícios em esmalte dental humano. Cavidades classe V foram preparadas no esmalte de 240 fragmentos dentais, aleatoriamente divididos em 12 grupos. Após serem restauradas as cavidades, os fragmentos foram submetidos a ciclos térmicos e de desmineralização e remineralização, simulando um alto desafio cariogênico. Sobre os fragmentos restaurados, ainda, foram aplicados dentifrícios contendo ou não flúor 5 minutos por dia. As diferenças no desenvolvimento de lesões experimentais de cárie adjacente às restaurações foram avaliadas por 5 examinadores calibrados, através de inspeção visual, atribuindo-se escores de 0 a 3. Os resultados foram avaliados pelo teste de Kruskal-Wallis seguido pelo teste de comparações múltiplas (?=0,05). Quando associados ao dentifrício fluoretado, os materiais restauradores não diferiram entre si em relação ao potencial cariostático. Ketac-Fil foi o único material que não diferiu significativamente quando associado com o dentifrício com ou sem flúor. Sob as condições experimentais do estudo, a associação dos materiais restauradores ao dentifrício fluoretado resultou em uma maior ação cariostática, exceto para o cimento de ionômero de vidro, que não diferiu com a aplicação dos dentifrícios
Abstract: The prevention or arrestment of caries lesions around restorations may be done through plaque removal and use of topical fluorides. Restorative materiaIs that release fluoride are still recommended for patients with high caries risk, although the real effect of their association with topical fluorides is not known. The aim of this study was to evaluate, in vitro, the cariostatic effect of six restorative materiaIs that contain fluoride associated with fluoride and non-fluoride dentifrices on human dental enamel. Standardized class V cavities were prepared on 240 enamel fTagments,randomly assigned in 12 groups. After cavity restoration, the fragments were submitted to 1000 thermal cycles, and to demineralization/remineralization cycles, simulating a high cariogenic challenge. During pH cycles, slurries of fluoride and non-fluoride dentifuces were applied for tive minutes after demineralization solution. Artificial caries-like lesions formations were scored independently and blindly by tive calibrated examiners, using a 0 to 3 ordinal scale through visual inspection. The data were evaluated by Kruskal-Wallis test, followed by paired comparisons test (?=0,05). There were no significant differences among restorative materiaIs when associated with fluoride dentifuces. Ketac-Fil was the unique that did not differ when associated with fluoride or non-fluoride dentifrices. Under experimental conditions, the association of restorative materiaIs with a fluoride dentifrice provided better cariostatic effect, except to the conventional glass ionomer cement, whose effect did not change with the dentifrice application
Mestrado
Dentística
Mestre em Clínica Odontológica

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Cekceoglu, Engin. « Communicating Corporate Identity Through Form Attributes And Evaluating Visual Analogy Of Digital Cameras ». Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607864/index.pdf.

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The basic notion of this study is related with visual attributes of products which reflect the identity of the company as well as form and design consistency which is a factor forming corporate identity. The sub-notions of the topic are elaborated in the literature review. The efforts which aimed at finding out the distinguishing characteristics of products focused on certain sample products. Digital camera is selected for the field study. The objective of the study is to put evidence that firms can be distinguished from each other with the help of visual attributes of their products and to determine which factors are effective throughout this process.

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Almeida, Junior João Baptista de. « Imagem e conhecimento : analise das concepções representacionista e fenomenologica e suas implicações na educação ». [s.n.], 1997. http://repositorio.unicamp.br/jspui/handle/REPOSIP/252783.

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Orientador: Newton Aquiles von Zuben
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Educação
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Resumo: Esta tese analisa a função da imagem como inqrediente compósito idéia, linguagens e conhecimento, sob dois aspectos. Uma abordagem antropossociológica (dimensão empírica) descreve a imagem artefactum, produzida, manual ou tecnicamente, pelo homem e propagada pelos meios de comunicação social, como elemento indutor de formas percepção. De modo sucinto, situa a imagem na história humana e na modernidade, revelando seu papel de dominância, o intercâmbio dialético com outras linguagens e os mecanismos de reificação da Consciência decorrentes do seu consumo acrítico. A Abordagem epistemológica ( dimensão teórica examina a função da imagem intramental, enquanto metáfora imagética e interface entre as esferas sensível e inteligível de um sujeito percipiente, no processo de cognição. Faz-se uma revisão das análises do fenômeno da percepção e dos modelos cognitivos elaborados pelas correntes representacionistas em contraposição concepção fenomenológica e aos princípios da semiologia contemporânea. São examinadas a teoria da imagem do empirisrno de Locke, a teoria da percepção inatista e o conhecimento "von unten¿ de Leibniz, a teoria da sensibilidade Kant,. a fenomenologia da percepção de Merleau-Ponty e as contribuições pontuais de Régis Debray e Paul Virílio. A reflexão procura revelar, também, o estatuto epistemológico da imagem, de maneira a legitimar, pedagogicamente, uma proposta de leitura aberta e inventariante de imagens. Em conclusão, são indicadas algumas linhas de pesquisa, corno sugestão aos educadores, para o tratamento didático da imagem no ensino
Doutorado
Filosofia e História da Educação
Doutor em Educação

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Nogueira, Erich Soares 1971. « Percepção e experiencia poetica : estudo para uma analise de "Campo geral", de J. Guimarães Rosa ». [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/268924.

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Orientador: Suzi Frankl Sperber
Dissertação (mestrado) - Universidade Estadual de Campinas, Institutos de Estudos da Linguagem
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Resumo: Esta dissertação de mestrado faz uma análise da novela ¿Campo Geral¿, de Guimarães Rosa, considerando a percepção sensorial da personagem Miguilim. Antes, porém, há um estudo sobre a percepção sensorial na obra de Rosa, em que se consideram algumas idéias do filósofo Merleau-Ponty. Analisam-se trechos de Boiada (anotações que Guimarães Rosa fizera em sua viagem pelo sertão), além de passagens retiradas de ¿São Marcos¿, ¿A hora e a vez de Augusto Matraga¿ e Grande Sertão: Veredas. Discute-se, sobretudo, a relação entre a percepção sensorial das personagens e o caráter poético da linguagem de Rosa. Inclui-se, nesse estudo, também a relação entre o corpo da palavra e o corpo do leitor. Na análise da novela ¿Campo Geral¿, trabalha-se com a experiência do visível. O olhar míope da personagem Miguilim revela uma experiência de ordem poética e de resistência a um mundo que reduz o corpo a um instrumento de trabalho. Por fim, analisa-se a formação de Miguilim como contador de estórias. Essa atividade elabora sentidos para as percepções sensoriais da personagem e mostra ser recurso importante no enfrentamento da morte e na afirmação da alegria, temas fundamentais de ¿Campo Geral¿
Abstract: This dissertation analyses the story ¿Campo Geral¿ by Guimarães Rosa, considering the sensorial perception of the character Miguilim. Before that, however, there is a study about the sensorial perception in Rosa¿s work, taking into account some ideas of the philosopher Merleau-Ponty. Fragments from Boiada (notes handwritten by Rosa all along his journey through the hinterland) are analysed, as well as excerpts taken from the short stories ¿São Marcos¿, ¿A hora e a vez de Augusto Matraga¿ and the novel Grande Sertão:Veredas. Above all, here is discussed the relation between the sensorial perception of the characters and the poetic nature of Rosa¿s language. Also included in this study is the relation between the body of the word and the body of the reader. The analysis of ¿Campo Geral¿ involves the experience of the visible. The myopic look of Miguilim reveals an experience of poetic order and resistance to a world that reduces the body to a mere instrument of work. Finally, under disc Such activity elaborates senses to the sensorial perceptions of the character and ends up revealing iself an important device in the facing of the death and in the affirmation of the joy, fundamental themes in ¿Campo Geral¿
Mestrado
Literatura Brasileira
Mestre em Teoria e História Literária

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Latour, Gaël. « Les couches picturales stratifiées : analyse et modélisation de l'aspect visuel ». Phd thesis, Université Pierre et Marie Curie - Paris VI, 2007. http://tel.archives-ouvertes.fr/tel-00239196.

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Une peinture est un matériau complexe composé de plusieurs couches picturales. Ce travail de recherche poursuit un double but : comprendre et modéliser l'aspect visuel d'un tel milieu stratifié et développer des méthodes non destructives permettant d'identifier les différents constituants présents dans une œuvre d'art. L'équation de transfert radiatif, résolue par la méthode de la fonction auxiliaire, permet de modéliser l'aspect visuel des couches picturales stratifiées. Cette modélisation est validée par comparaison avec des spectres expérimentaux de réflexion diffuse. Expérimentalement, la reconnaissance des pigments et des colorants à partir d'un appareil déjà opérationnel au laboratoire a été étendue à celle des constituants d'un mélange de pigments. De plus, la tomographie optique cohérente (OCT), développée au cours de cette thèse, permet d'imager les pigments et d'obtenir une information spectrale permettant d'envisager une identification non destructive des composants de couches picturales stratifiées.

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Paplauskaitė, Gytė. « Spalvų įtakos 5 – 7 klasių mokinių vizualinei raiškai analizė ». Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_181919-42084.

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Atsižvelgiant į šiuolaikinę ugdymo koncepciją buvo siekiama išanalizuoti spalvos poveikį mokinių vizualinei raiškai ir tuo būdu labiau sudominti menu mokinius. Tuo tikslu buvo surinkti ir apibendrinti įvairių šalių ir laikotarpių koloristų, menininkų, psichologų, filosofų ir mokslininkų spalvų teorijos darbai, atsispindintys spalvos ir šviesos prigimties aiškinimo, spalvos niuansų išgavimo, jų derinimo, spalvinių efektų panaudojimo ir poveikio žmogaus meniniam pasaulio suvokimui raida. Palyginus įvairių autorių patektus spalvų ratus, spalvines sferas, kubus ir kitas spalvų figūras, buvo aptarti jų bendri ir specifiniai bruožai. Buvo pateikti spalvų derinimo pavyzdžiai, aptartas jų estetinis meninis poveikis. Pedagoginio eksperimento metu, trukusio 2007 – 2008 mokslo metus, siekta pateikti mokiniams įvairiapusišką, vaizdingą, lengvai suvokiamą spalvų derinimo iliustracinę medžiagą. Pamokų metu buvo pastebėta, kad vizualinė dailė siejasi ir su fizika, ir su akies sandarą nagrinėjančia biologija. Išstudijuota literatūra, atspindinti psichologinius 5 -7 klasių mokinių ypatumus, paauglystės laikotarpio vaikų intelektualinės ir emocinės brandos raiškos formas bei problemas. Surinkta medžiaga iš pedagogikos – psichologijos leidinių apie jaunesnių paauglių psichologinius ir vizualinės raiškos ypatumus, atskleidžianti, kaip produktyviau ir efektyviau panaudoti sukauptas žinias apie spalvų įtaką mokinių vizualinei raiškai, kurios pagalba bręstantys vaikai bando tiksliau išreikšti savo... [toliau žr. visą tekstą]
Considering today’s training conception the aim was to analyze the influence of colours toward the visual expression of the schoolchildren and raise their interest in art. Colours theory works of different country‘s and time’s colourist‘s, artist‘s, psychologist‘s, philosopher‘s and scientist’s were collected and summarized. Common and specific features of geometrical figures of different colours were discussed. Examples of combinations of colours were presented and aesthetic art influence was discussed. Different, pictures and understandable literature about compositions of colours was presented to schoolchildren during 2007-2008 year training experiment. Literature on psychology and visual expression of young people was analyzed. Additional information about compositions of colours and light was provided to the schoolchildren of the 5th - 7th class during the research. Completed tests and content analysis of art works of schoolchildren proved hypothesis that it is right to give to young people the knowledge about the colours because the schoolchildren of the 5th class were interested in contrasts and the schoolchildren of upper classes were interested in half-tones and indistinct colours.

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Alameda-Pineda, Xavier. « Egocentric Audio-Visual Scene Analysis : a machine learning and signal processing approach ». Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENM024/document.

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Depuis les vingt dernières années, l'industrie a développé plusieurs produits commerciaux dotés de capacités auditives et visuelles. La grand majorité de ces produits est composée d'un caméscope et d'un microphone embarqué (téléphones portables, tablettes, etc). D'autres, comme la Kinect, sont équipés de capteurs de profondeur et/ou de petits réseaux de microphones. On trouve également des téléphones portables dotés d'un système de vision stéréo. En même temps, plusieurs systèmes orientés recherche sont apparus (par exemple, le robot humanoïde NAO). Du fait que ces systèmes sont compacts, leurs capteurs sont positionnés près les uns des autres. En conséquence, ils ne peuvent pas capturer la scène complète, mais qu'un point de vue très particulier de l'interaction sociale en cours. On appelle cela "Analyse Égocentrique de Scènes Audio-Visuelles''.Cette thèse contribue à cette thématique de plusieurs façons. D'abord, en fournissant une base de données publique qui cible des applications comme la reconnaissance d'actions et de gestes, localisation et suivi d'interlocuteurs, analyse du tour de parole, localisation de sources auditives, etc. Cette base a été utilisé en dedans et en dehors de cette thèse. Nous avons aussi travaillé le problème de la détection d'événements audio-visuels. Nous avons montré comme la confiance en une des modalités (issue de la vision en l'occurrence), peut être modélisée pour biaiser la méthode, en donnant lieu à un algorithme d'espérance-maximisation visuellement supervisé. Ensuite, nous avons modifié l'approche pour cibler la détection audio-visuelle d'interlocuteurs en utilisant le robot humanoïde NAO. En parallèle aux travaux en détection audio-visuelle d'interlocuteurs, nous avons développé une nouvelle approche pour la reconnaissance audio-visuelle de commandes. Nous avons évalué la qualité de plusieurs indices et classeurs, et confirmé que l'utilisation des données auditives et visuelles favorise la reconnaissance, en comparaison aux méthodes qui n'utilisent que l'audio ou que la vidéo. Plus tard, nous avons cherché la meilleure méthode pour des ensembles d'entraînement minuscules (5-10 observations par catégorie). Il s'agit d'un problème intéressant, car les systèmes réels ont besoin de s'adapter très rapidement et d'apprendre de nouvelles commandes. Ces systèmes doivent être opérationnels avec très peu d'échantillons pour l'usage publique. Pour finir, nous avons contribué au champ de la localisation de sources sonores, dans le cas particulier des réseaux coplanaires de microphones. C'est une problématique importante, car la géométrie du réseau est arbitraire et inconnue. En conséquence, cela ouvre la voie pour travailler avec des réseaux de microphones dynamiques, qui peuvent adapter leur géométrie pour mieux répondre à certaines tâches. De plus, la conception des produits commerciaux peut être contrainte de façon que les réseaux linéaires ou circulaires ne sont pas bien adaptés
Along the past two decades, the industry has developed several commercial products with audio-visual sensing capabilities. Most of them consists on a videocamera with an embedded microphone (mobile phones, tablets, etc). Other, such as Kinect, include depth sensors and/or small microphone arrays. Also, there are some mobile phones equipped with a stereo camera pair. At the same time, many research-oriented systems became available (e.g., humanoid robots such as NAO). Since all these systems are small in volume, their sensors are close to each other. Therefore, they are not able to capture de global scene, but one point of view of the ongoing social interplay. We refer to this as "Egocentric Audio-Visual Scene Analysis''.This thesis contributes to this field in several aspects. Firstly, by providing a publicly available data set targeting applications such as action/gesture recognition, speaker localization, tracking and diarisation, sound source localization, dialogue modelling, etc. This work has been used later on inside and outside the thesis. We also investigated the problem of AV event detection. We showed how the trust on one of the modalities (visual to be precise) can be modeled and used to bias the method, leading to a visually-supervised EM algorithm (ViSEM). Afterwards we modified the approach to target audio-visual speaker detection yielding to an on-line method working in the humanoid robot NAO. In parallel to the work on audio-visual speaker detection, we developed a new approach for audio-visual command recognition. We explored different features and classifiers and confirmed that the use of audio-visual data increases the performance when compared to auditory-only and to video-only classifiers. Later, we sought for the best method using tiny training sets (5-10 samples per class). This is interesting because real systems need to adapt and learn new commands from the user. Such systems need to be operational with a few examples for the general public usage. Finally, we contributed to the field of sound source localization, in the particular case of non-coplanar microphone arrays. This is interesting because the geometry of the microphone can be any. Consequently, this opens the door to dynamic microphone arrays that would adapt their geometry to fit some particular tasks. Also, because the design of commercial systems may be subject to certain constraints for which circular or linear arrays are not suited

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Song, Guanghan. « Effect of sound in videos on gaze : contribution to audio-visual saliency modelling ». Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENT013/document.

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Les humains reçoivent grande quantité d'informations de l'environnement avec vue et l'ouïe . Pour nous aider à réagir rapidement et correctement, il existe des mécanismes dans le cerveau à l'attention de polarisation vers des régions particulières , à savoir les régions saillants . Ce biais attentionnel n'est pas seulement influencée par la vision , mais aussi influencée par l'interaction audio - visuelle . Selon la littérature existante , l'attention visuelle peut être étudié à mouvements oculaires , mais l'effet sonore sur le mouvement des yeux dans les vidéos est peu connue . L'objectif de cette thèse est d'étudier l'influence du son dans les vidéos sur le mouvement des yeux et de proposer un modèle de saillance audio - visuel pour prédire les régions saillants dans les vidéos avec plus de précision . A cet effet, nous avons conçu une première expérience audio - visuelle de poursuite oculaire . Nous avons créé une base de données d'extraits vidéo courts choisis dans divers films . Ces extraits ont été consultés par les participants , soit avec leur bande originale (condition AV ) , ou sans bande sonore ( état V) . Nous avons analysé la différence de positions de l'oeil entre les participants des conditions de AV et V . Les résultats montrent qu'il n'existe un effet du bruit sur le mouvement des yeux et l'effet est plus important pour la classe de la parole à l'écran . Ensuite , nous avons conçu une deuxième expérience audiovisuelle avec treize classes de sons. En comparant la différence de positions de l'oeil entre les participants des conditions de AV et V , nous concluons que l'effet du son est différente selon le type de son , et les classes avec la voix humaine ( c'est à dire les classes parole , chanteur , bruit humain et chanteurs ) ont le plus grand effet . Plus précisément , la source sonore a attiré considérablement la position des yeux uniquement lorsque le son a été la voix humaine . En outre , les participants atteints de la maladie de AV avaient une durée moyenne plus courte de fixation que de l'état de V . Enfin , nous avons proposé un modèle de saillance audio- visuel préliminaire sur la base des résultats des expériences ci-dessus . Dans ce modèle , deux stratégies de fusion de l'information audio et visuelle ont été décrits: l'un pour la classe de son discours , et l'autre pour la musique classe de son instrument . Les stratégies de fusion audio - visuelle définies dans le modèle améliore la prévisibilité à la condition AV
Humans receive large quantity of information from the environment with sight and hearing. To help us to react rapidly and properly, there exist mechanisms in the brain to bias attention towards particular regions, namely the salient regions. This attentional bias is not only influenced by vision, but also influenced by audio-visual interaction. According to existing literature, the visual attention can be studied towards eye movements, however the sound effect on eye movement in videos is little known. The aim of this thesis is to investigate the influence of sound in videos on eye movement and to propose an audio-visual saliency model to predict salient regions in videos more accurately. For this purpose, we designed a first audio-visual experiment of eye tracking. We created a database of short video excerpts selected from various films. These excerpts were viewed by participants either with their original soundtrack (AV condition), or without soundtrack (V condition). We analyzed the difference of eye positions between participants with AV and V conditions. The results show that there does exist an effect of sound on eye movement and the effect is greater for the on-screen speech class. Then, we designed a second audio-visual experiment with thirteen classes of sound. Through comparing the difference of eye positions between participants with AV and V conditions, we conclude that the effect of sound is different depending on the type of sound, and the classes with human voice (i.e. speech, singer, human noise and singers classes) have the greatest effect. More precisely, sound source significantly attracted eye position only when the sound was human voice. Moreover, participants with AV condition had a shorter average duration of fixation than with V condition. Finally, we proposed a preliminary audio-visual saliency model based on the findings of the above experiments. In this model, two fusion strategies of audio and visual information were described: one for speech sound class, and one for musical instrument sound class. The audio-visual fusion strategies defined in the model improves its predictability with AV condition

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Mariani, Neto Corintio. « Comparação entre a analise visual e a computadorizada de registros cardiotocograficos anteparto em gestações de alto risco ». [s.n.], 1999. http://repositorio.unicamp.br/jspui/handle/REPOSIP/313197.

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Orientador: Anibal Faundes
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas
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Doutorado

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Guerra, Anne-Sophie. « Métrologie sensorielle dans le cadre du contrôle qualité visuel ». Chambéry, 2008. http://www.theses.fr/2008CHAMS037.

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La thèse traite du problème de la maîtrise de la qualité visuelle des produits manufacturés de haute qualité. Nous faisons l'hypothèse que la maîtrise de cette qualité passera encore pour de nombreuses années par un contrôle visuel des produits. Le premier chapitre présente une étude bibliographique des différents éléments relatifs au contrôle qualité en général, et au contrôle visuel en particulier. Le chapitre 2 décrit la démarche générique que nous proposons pour percevoir, puis évaluer une anomalie. Cette démarche distingue de façon formelle la perception d'une anomalie de son evaluation. Nous montrons que cette distinction apporte une bien meilleure compréhension des sources de variabilité dans le contrôle visuel. En partant des démarches largement utilisées dans le cadre de l'analyse sensorielle, notre démarche formalise donc ces deux étapes afin de réduire la variabilité dans la décision de conformité lors d'un contrôle visuel. Le chapitre 3 propose une structuration d'une démarche métrologique ayant pour objectif de garantir, la justesse et la faible variabilité dans le temps et dans l'espace. Notre proposition, basée sur les concepts d'une métrologie dimensionnelle, intègre les spécificités liées à toute mesure sensorielle réalisée par l'homme, et en particulier la part de subjectivité importante qui peut être associée à cette mesure. Partant de l'évaluation d'une seule anomalie, nous décrivons dans le chapitre 4 une démarche permettant de décider de l'acceptation ou du refus d'un produit combinant différentes anomalies sur différentes surfaces. Notre approche, fondée sur la fonction perte de Taguchi, permet de généraliser au contrôle visuel les approches de tolérancement largement utilisées en qualité géométrique des produits. Le chapitre 5 illustre l'application de ces concepts au sein de l'entreprise avec laquelle nous avons collaboré. II propose également une synthèse de gains que peut apporter une telle démarche
The thesis deals with the problem of visual quality control of high quality manufactured products. We make the hypothesis that the control of this quality will be still realized many years by a visual inspection of the products. The first chapter presents a bibliographical study of different elements relating to the quality control in general, and particularly, the visual inspection. The chapter 2 describes the generic approach that we propose to perceive, then evaluate an anomaly. This approach separates in a formal way the perception of an anomaly from its evaluation. We show that this distinction gives a better comprehension of the variability sources in the visual inspection. Based on the approaches very largely used within the framework of the sensory analysis, our approach thus formalizes these two steps in order to reduce the variability in the decision of conformity during a visual inspection. The chapter 3 proposes a structuring metrological approach having for objective to guarantee the accuracy and the reduced variability in time and space. Our suggestion, based on the concepts of a dimensional metrology, integrates the specificities related to any sensory measurement carried out by the man, and in particular the part of significant subjectivity which can be associated to this measurement. Based on the evaluation of only one anomaly, we describe in the chapter 4 an approach allowing to decide acceptance or refusal of a product combining various anomalies on various surfaces. Our approach, based on the Taguchi's loss function, makes it possible to generalize with the visual inspection the approaches of tolerance largely used in geometrical quality of the products. The chapter 5 illustrates the application of these concepts within the company with which we collaborated. It also proposes a synthesis of profits that such an approach can produce

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Parekh, Sanjeel. « Learning representations for robust audio-visual scene analysis ». Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLT015/document.

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L'objectif de cette thèse est de concevoir des algorithmes qui permettent la détection robuste d’objets et d’événements dans des vidéos en s’appuyant sur une analyse conjointe de données audio et visuelle. Ceci est inspiré par la capacité remarquable des humains à intégrer les caractéristiques auditives et visuelles pour améliorer leur compréhension de scénarios bruités. À cette fin, nous nous appuyons sur deux types d'associations naturelles entre les modalités d'enregistrements audiovisuels (réalisés à l'aide d'un seul microphone et d'une seule caméra), à savoir la corrélation mouvement/audio et la co-occurrence apparence/audio. Dans le premier cas, nous utilisons la séparation de sources audio comme application principale et proposons deux nouvelles méthodes dans le cadre classique de la factorisation par matrices non négatives (NMF). L'idée centrale est d'utiliser la corrélation temporelle entre l'audio et le mouvement pour les objets / actions où le mouvement produisant le son est visible. La première méthode proposée met l'accent sur le couplage flexible entre les représentations audio et de mouvement capturant les variations temporelles, tandis que la seconde repose sur la régression intermodale. Nous avons séparé plusieurs mélanges complexes d'instruments à cordes en leurs sources constituantes en utilisant ces approches.Pour identifier et extraire de nombreux objets couramment rencontrés, nous exploitons la co-occurrence apparence/audio dans de grands ensembles de données. Ce mécanisme d'association complémentaire est particulièrement utile pour les objets où les corrélations basées sur le mouvement ne sont ni visibles ni disponibles. Le problème est traité dans un contexte faiblement supervisé dans lequel nous proposons un framework d’apprentissage de représentation pour la classification robuste des événements audiovisuels, la localisation des objets visuels, la détection des événements audio et la séparation de sources.Nous avons testé de manière approfondie les idées proposées sur des ensembles de données publics. Ces expériences permettent de faire un lien avec des phénomènes intuitifs et multimodaux que les humains utilisent dans leur processus de compréhension de scènes audiovisuelles
The goal of this thesis is to design algorithms that enable robust detection of objectsand events in videos through joint audio-visual analysis. This is motivated by humans’remarkable ability to meaningfully integrate auditory and visual characteristics forperception in noisy scenarios. To this end, we identify two kinds of natural associationsbetween the modalities in recordings made using a single microphone and camera,namely motion-audio correlation and appearance-audio co-occurrence.For the former, we use audio source separation as the primary application andpropose two novel methods within the popular non-negative matrix factorizationframework. The central idea is to utilize the temporal correlation between audio andmotion for objects/actions where the sound-producing motion is visible. The firstproposed method focuses on soft coupling between audio and motion representationscapturing temporal variations, while the second is based on cross-modal regression.We segregate several challenging audio mixtures of string instruments into theirconstituent sources using these approaches.To identify and extract many commonly encountered objects, we leverageappearance–audio co-occurrence in large datasets. This complementary associationmechanism is particularly useful for objects where motion-based correlations are notvisible or available. The problem is dealt with in a weakly-supervised setting whereinwe design a representation learning framework for robust AV event classification,visual object localization, audio event detection and source separation.We extensively test the proposed ideas on publicly available datasets. The experimentsdemonstrate several intuitive multimodal phenomena that humans utilize on aregular basis for robust scene understanding

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Raveneau, Vincent. « Interaction in Progressive Visual Analytics : an application to progressive sequential pattern mining ». Thesis, Nantes, 2020. http://www.theses.fr/2020NANT4022.

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Le paradigme de Progressive Visual Analytics (PVA) a été proposé en réponse aux difficultés rencontrées par les Visual Analytics lors du traitement de données massives ou de l’utilisation d’algorithmes longs, par l’usage de résultats intermédiaires et par l’interaction entre humain et algorithmes en cours d’exécution. Nous nous intéressons d’abord à la notion d’“interaction”, mal définie en PVA, dans le but d’établir une vision structurée de ce qu’est l’interaction avec un algorithme en PVA. Nous nous intéressons ensuite à la conception et à l’implémentation d’un système et d’un algorithme progressif de fouille de motifs séquentiels, qui permettent d’explorer à la fois les motifs et les données sous-jacentes, en nous concentrant sur les interactions entre analyste et algorithme. Nos travaux ouvrent des perspectives concernant 1/ l’assistance de l’analyste dans ses interactions avec un algorithme dans un contexte de PVA; 2/ une exploration poussée des interactions en PVA; 3/ la création d’algorithmes nativement progressifs, ayant la progressivité et les interactions au cœur de leur conception
The Progressive Visual Analytics (PVA) paradigm has been proposed to alleviate difficulties of Visual Analytics when dealing with large datasets or time-consuming algorithms, by using intermediate results and interactions between the human and the running algorithm. Our work is twofold. First, by considering that the notion of “interaction” was not well defined for PVA, we focused on providing a structured vision of what interacting with an algorithm in PVA means. Second, we focused on the design and implementation of a progressive sequential pattern mining algorithm and system, allowing to explore both the patterns and the underlying data, with a focus on the analyst/algorithm interactions. The perspectives opened by our work deal with 1/ assisting analysts in their interactions with algorithm in PVA settings; 2/ further exploring interaction in PVA ; 3/ creating natively progressive algorithms, for which progressiveness and interaction are at the core of the design

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Discours, Christophe. « Analyse du mouvement par mise en correspondance d'indices visuels ». Phd thesis, Grenoble INPG, 1990. http://tel.archives-ouvertes.fr/tel-00338382.

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Nous présentons un système de vision utilisant la mesure du mouvement pour extraire des informations tridimensionnelles. Ce système permet de fournir des indices 3-d a partir d'une séquence d'images. Il s'articule en trois modules qui peuvent fonctionner indépendamment: une technique d'extraction de segments de droite a partir d'une image de contours. La caractéristique principale de cette technique est d'utiliser un balayage simple de l'image. Elle est donc particulièrement destinée a être câblée et fonctionner en synchronisation avec le balayage vidéo; un suivi d'indices performant. Notre système est fonde sur l'utilisation d'un modèle des indices observes et d'un filtre de Kalman; une reconstruction de segments 3-d. Cette reconstruction, utilisant l'étiquetage de segments dans une séquence fourni par le suivi d'indices, est fonde sur l'utilisation des équations de la stereovision

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Nanci, Maria Beatriz Frade. « A escuta do mar... : criação coreografica com descrição e analise ». [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/284690.

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Orientador: Antonieta Marilia de Oswald de Andrade
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Artes
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Resumo: Esta dissertação apresenta a descrição e análise de um processo de criação coreográfica intitulada " À Escuta do Mar..." , com base em elementos presentes na poética do universo feminino, tema central de minhas criações. A coreografia procura apresentar a síntese de diversos trabalhos técnicos e de criação em dança e teatro, vivenciados ,desde o início da carreira artística. Na busca por uma linguagem corporal ou uma poética própria na dança, ao transcorrer por criações anteriores, analisei e descrevi também suas personagens baseadas em referências femininas diversificadas, e observei ainda as técnicas codificadas e formas pré-concebidas contidas em cada criação. Tais personagens femininas, juntamente com a nova personagem desta coreografia proposta são resultado de minha busca por uma linguagem pessoal. Assim, esta nova personagem é a metáfora de minha Escuta, ou seja, de uma referência feminina própria.
Abstract: This study presents a description and analysis of a choreographic creation process intitled "À Escuta do Mar" (Waiting to Hear the Sea...). The study is based on elements of the feminine universe poetry, which is the central subject of my criations. The choreographic part aims to present a synthesis of many technical and inventive works in dance and theater of my artistic carrer. While revisiting my old creations in a search for a poetical corporal language or a particular poetry in dance I had analyzed and described the characters based on different feminine references, and also had observed the codified techniques and preconceived gestures used in each creation. Those feminine characters together with the character of this new choreographic proposal are results of a search for my own personal artistic language. Thus, this new character is a metaphor of my "hearing", that is, of a particular feminine reference.
Mestrado
Mestre em Artes

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Carlier, Axel. « Compréhension de contenus visuels par analyse conjointe du contenu et des usages ». Thesis, Toulouse, INPT, 2014. http://www.theses.fr/2014INPT0085/document.

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Dans cette thèse, nous traitons de la compréhension de contenus visuels, qu’il s’agisse d’images, de vidéos ou encore de contenus 3D. On entend par compréhension la capacité à inférer des informations sémantiques sur le contenu visuel. L’objectif de ce travail est d’étudier des méthodes combinant deux approches : 1) l’analyse automatique des contenus et 2) l’analyse des interactions liées à l’utilisation de ces contenus (analyse des usages, en plus bref). Dans un premier temps, nous étudions l’état de l’art issu des communautés de la vision par ordinateur et du multimédia. Il y a 20 ans, l’approche dominante visait une compréhension complètement automatique des images. Cette approche laisse aujourd’hui plus de place à différentes formes d’interventions humaines. Ces dernières peuvent se traduire par la constitution d’une base d’apprentissage annotée, par la résolution interactive de problèmes (par exemple de détection ou de segmentation) ou encore par la collecte d’informations implicites issues des usages du contenu. Il existe des liens riches et complexes entre supervision humaine d’algorithmes automatiques et adaptation des contributions humaines via la mise en œuvre d’algorithmes automatiques. Ces liens sont à l’origine de questions de recherche modernes : comment motiver des intervenants humains ? Comment concevoir des scénarii interactifs pour lesquels les interactions contribuent à comprendre le contenu manipulé ? Comment vérifier la qualité des traces collectées ? Comment agréger les données d’usage ? Comment fusionner les données d’usage avec celles, plus classiques, issues d’une analyse automatique ? Notre revue de la littérature aborde ces questions et permet de positionner les contributions de cette thèse. Celles-ci s’articulent en deux grandes parties. La première partie de nos travaux revisite la détection de régions importantes ou saillantes au travers de retours implicites d’utilisateurs qui visualisent ou acquièrent des con- tenus visuels. En 2D d’abord, plusieurs interfaces de vidéos interactives (en particulier la vidéo zoomable) sont conçues pour coordonner des analyses basées sur le contenu avec celles basées sur l’usage. On généralise ces résultats en 3D avec l’introduction d’un nouveau détecteur de régions saillantes déduit de la capture simultanée de vidéos de la même performance artistique publique (spectacles de danse, de chant etc.) par de nombreux utilisateurs. La seconde contribution de notre travail vise une compréhension sémantique d’images fixes. Nous exploitons les données récoltées à travers un jeu, Ask’nSeek, que nous avons créé. Les interactions élémentaires (comme les clics) et les données textuelles saisies par les joueurs sont, comme précédemment, rapprochées d’analyses automatiques des images. Nous montrons en particulier l’intérêt d’interactions révélatrices des relations spatiales entre différents objets détectables dans une même scène. Après la détection des objets d’intérêt dans une scène, nous abordons aussi le problème, plus ambitieux, de la segmentation
This thesis focuses on the problem of understanding visual contents, which can be images, videos or 3D contents. Understanding means that we aim at inferring semantic information about the visual content. The goal of our work is to study methods that combine two types of approaches: 1) automatic content analysis and 2) an analysis of how humans interact with the content (in other words, usage analysis). We start by reviewing the state of the art from both Computer Vision and Multimedia communities. Twenty years ago, the main approach was aiming at a fully automatic understanding of images. This approach today gives way to different forms of human intervention, whether it is through the constitution of annotated datasets, or by solving problems interactively (e.g. detection or segmentation), or by the implicit collection of information gathered from content usages. These different types of human intervention are at the heart of modern research questions: how to motivate human contributors? How to design interactive scenarii that will generate interactions that contribute to content understanding? How to check or ensure the quality of human contributions? How to aggregate human contributions? How to fuse inputs obtained from usage analysis with traditional outputs from content analysis? Our literature review addresses these questions and allows us to position the contributions of this thesis. In our first set of contributions we revisit the detection of important (or salient) regions through implicit feedback from users that either consume or produce visual contents. In 2D, we develop several interfaces of interactive video (e.g. zoomable video) in order to coordinate content analysis and usage analysis. We also generalize these results to 3D by introducing a new detector of salient regions that builds upon simultaneous video recordings of the same public artistic performance (dance show, chant, etc.) by multiple users. The second contribution of our work aims at a semantic understanding of fixed images. With this goal in mind, we use data gathered through a game, Ask’nSeek, that we created. Elementary interactions (such as clicks) together with textual input data from players are, as before, mixed with automatic analysis of images. In particular, we show the usefulness of interactions that help revealing spatial relations between different objects in a scene. After studying the problem of detecting objects on a scene, we also adress the more ambitious problem of segmentation

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Duflot, Lesley-Ann. « Asservissement visuel direct utilisant les décompositions en shearlets et en ondelettes de l'image ». Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1S018/document.

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L'asservissement visuel est un procédé consistant à utiliser l'information visuelle obtenue par un capteur afin de commander un système robotique. Ces informations, appelées primitives visuelles peuvent être d'ordre 2D ou 3D. Le travail présenté ici porte sur une nouvelle approche 2D utilisant des primitives directes : les décompositions de l'image en ondelettes ou en shearlets. Ces représentations présentent en effet l'avantage de décrire l'image sous différentes formes, mettant l'accent soit sur les basses fréquences de l'image, soit sur les hautes fréquences selon plusieurs directions. Les zones de l'image contenant beaucoup d'information, comme les contours ou les points singuliers, possèdent alors de forts coefficients dans la transformée en ondelettes ou en shearlets de l'image, tandis que les zones uniformes possèdent des coefficients proches de zéro. Les travaux de cette thèse montrent la précision et la robustesse de l'approche utilisant la décomposition en shearlets dans le cadre de l'imagerie échographique. Néanmoins, sa contribution majeure est l'élaboration d'une commande permettant d'utiliser au choix les ondelettes ou les shearlets ainsi que la validation de cette méthode sur caméra monoculaire et sur capteur de type tomographie par cohérence optique dans différentes conditions d'utilisation. Cette méthode présente des performances significatives en termes de précision et de robustesse et ouvre la porte vers une utilisation couplée de l'asservissement visuel et de l'acquisition comprimée
A visual servoing scheme consists of a closed-loop control approach which uses visual information feedback to control the movement of a robotic system. This data, called visual features, can be 2D or 3D. This thesis deals with the development of a new generation of 2D direct visual servoing methods in which the signal control inputs are the coefficients of a multiscale image representation. Specially, we consider the use of multiscale image representations that are based on discrete wavelet and shearlet transformations. This kind of representations allows us to obtain several descriptions of the image based on either low or high frequencies levels. Indeed, high coefficients in the wavelet or in the shearlet transformation of the image correspond to image singularities. This thesis has begun with the development of a shearlet-based visual servoing for ultrasound imaging that has performed well in precision and robustness for this medical application. Nevertheless, the main contribution is a framework allowing us to use several multi-scale representations of the image. It was then tested with conventional white light camera and with an optical coherence tomography imaging system with nominal and unfavorable conditions. Then, the wavelet and the shearlet based methods showed their accuracy and their robustness in several conditions and led to the use of both visual servoing and compressed sensing as the main perspective of this work

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Yaner, Patrick William. « From Shape to Function : Acquisition of Teleological Models from Design Drawings by Compositional Analogy ». Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19791.

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Thesis (Ph.D)--Computing, Georgia Institute of Technology, 2008.
Committee Chair: Goel, Ashok; Committee Member: Eastman, Charles; Committee Member: Ferguson, Ronald; Committee Member: Glasgow, Janice; Committee Member: Nersessian, Nancy; Committee Member: Ram, Ashwin.

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Khan, Imran. « A study to analyse importance of audio-visual content in dissemination of ancient culture’s professional activities ». Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/18348.

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Mestrado em Comunicação Multimédia
O conteúdo do áudio-visual tem elementos dinâmicos para transmitir a mensagem de forma positiva e eficaz. As imagens e o som melhoram a experiência e o conhecimento do usuário sobre as atividades profissionais de uma determinada cultura antiga. A escolha de conteúdos audiovisuais na divulgação das actividades profissionais da cultura antiga (Tourada) para uma aprendizagem melhorada irá revolucionar as formas de aprendizagem existentes e facilitará e reforçará o processo de aprendizagem em comparação com os processos convencionais existentes. Os benefícios oferecidos pelo conteúdo audiovisual estão além dos processos existentes para a divulgação da educação cultural e podem preencher as demandas futuras e existentes rapidamente, pois os usuários têm mais oportunidade e liberdade de mostrar envolvimento no assunto. Além disso, o conteúdo audiovisual evoca e apresenta um significado mais profundo e muito claro de educação para os usuários. Portanto, o objetivo básico deste estudo é promover antigas atividades culturais profissionais como a tourada através de conteúdo audiovisual. O estudo propõe-se explorar e documentar o uso de fontes de conteúdo audiovisual na divulgação da profissão antiga e na aprendizagem do processo no processo de elaboração de documentos existentes. Este estudo relacionará o conceito de conteúdo audiovisual com a profissão antiga. Este conceito de audiovisual ajudará a compreender a dinâmica do conteúdo audiovisual. Este estudo produzirá um documentário que será baseado na profissão de touradas. O documentário vai explorar várias fases da luta de touros, tais como sessões de treinamento ea luta arena.
The audio-visual’s content has dynamic elements to convey the message with positive and effective way. The images and sound enhance the user’s experience and knowledge about any particular ancient culture’s professional activities. The choice of audio-visual contents in the dissemination of ancient culture’s professional activities(Bullfighting) for enhanced learning will revolutionize the existing ways of learning and will facilitate and enhance the process of learning compared to the existing conventional processes. The benefits offered by audio-visual content is beyond the existing processes for disseminating the cultural education and can full-fill the future and existing demands rapidly as the users have more opportunity and freedom to show involvement in the subject matter. In addition, the audio-visual content evokes and presents a deeper and much clear meaning of education to users. Therefore, the basics purpose of this study is to promote ancient cultural professional activities such as bullfighting through audio-visual content. The study proposes to explore and document the use of audio-visual content sources in disseminating ancient profession and learning the process in existing documentary making procedure. This study will relate the concept of audio-visual content with the ancient profession. This concept of audio-visual will help out to understand the dynamics of audio-visual content. This study will produce a documentary that will be based on bullfighting profession. The documentary will explore various stages of bull fighting such as training sessions and the arena fight.

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Hart, Dennis L., Johnny J. Pappas et John E. Lindegren. « Desktop GPS Analyst Standardized GPS Data Processing and Analysis on a Personal Computer ». International Foundation for Telemetering, 1996. http://hdl.handle.net/10150/611424.

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International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California
In the last few years there has been a proliferation of GPS receivers and receiver manufacturers. Couple this with a growing number of DoD test programs requiring high accuracy Time-Space-Position-Information (TSPI) with diminishing test support funds and/or needing a wide area, low altitude or surface tracking capability. The Air Force Development Test Center (AFDTC) recognized the growing requirements for using GPS in test programs and the need for a low cost, portable TSPI processing capability which sparked the development of the Desktop GPS Analyst. The Desktop GPS Analyst is a personal computer (PC) based software application for the generation of GPS-based TSPI.

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Fernandes, Carlos Roberto 1949. « Interface arte/propaganda no Brasil (1975-1984) a partir da analise de anuncios em revistas, nos anuarios do Clube de Criação de São Paulo ». [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/284024.

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Orientador: Adilson Ruiz
Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Artes
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Résumé: L'objectif de ce travail est celui de mettre en évidence le techniques d'élaboration des annonces des magazines, considerés comme des annonces publicitaires de qualité. n a utilisé comme corpus le matériel qui est dans les "Anuários do Clube de Criação de S. Paulo - 1975/1984" les materiaux ont été selectionnés par des divers jurys qui ont été constitués pendant toute la décennie. D'abord, on les a classés, par la composition plastique, en tennant compte des éléments visuels et structuraux des pieces et en même temps essayant de trouver les influences subies par les arts visuels. Apres l'analyse du materiel, les variations se présentent, et on passe à détailler les processus techniques; les éléments structuraux de leur composition qui sont les mêmes dans les oeuvres d'art conventionnels; des oeuvres cataloguées des le début du siecle dernier; les classements des annonces en observant la composition plastique, l'encadrement des images et la diversité des produits; l'interface publicité/arts plastiques demontrés par l'influence de la Pop Art et la Minimal Art ou I'intertextualité, les images rhétoriques presentées par le discours se manifestent comme moyen de persuasion
Resumo: Esta tese objetiva evidenciar as técnicas de elaboração de anúncios de revistas considerados de qualidade, analisando os trabalhos publicados nos Anuários do Clube de Criação de São Paulo no período de 1975 a 1984, selecionados por diversos júris, constituídos durante a década. Classificá-los, primeiramente, por grupos definidos pela composição plástica, levando em conta os elementos visuais e estruturais das peças, avaliando as influências possíveis das experiências simultâneas ocorridas no campo das artes visuais. A escolha dos Anuários do Clube de Criação de São Paulo deveu-se à singularidade da publicação no período, tratando-se de empreendimento meritório dos profissionais de propaganda, especialistas nessa área da Comunicação. Com os resultados aferidos, apresenta os comentários das variações constatadas, especificando os processos técnicos utilizados na produção gráfica de peças publicitárias, no período anterior à informatização geral do mercado; os elementos estruturais da composição compartilhados com obras das artes plásticas convencionais - pinturas, gravuras -, obras catalogadas desde o começo do século passado; a classificação, em grupos dos anúncios, observando a composição plástica, o enquadramento das imagens e a diversidade de produtos; a interface publicidade/artes plásticas demonstrada pela influência da Pop Art e da Minimal Art onde a intertextualidade, as figuras de retórica presentes no discurso gráfico aparecem como fator de persuasão na apresentação das mensagens publicitárias
Doutorado
Doutor em Multimeios

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Parisi, Giovanni <1995&gt. « La gestione della Corporate Visual Identity : Analisi qualitativa sulle caratteristiche organizzative a supporto dell’identità visiva aziendale. Una prospettiva interna ». Master's Degree Thesis, Università Ca' Foscari Venezia, 2021. http://hdl.handle.net/10579/20067.

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L’obiettivo di ricerca della mia tesi è quello di analizzare l’impatto che le pratiche gestionali e le caratteristiche organizzative hanno nel processo di strutturazione della corporate visual identity. Attraverso la mia analisi cercherò di comprendere e ricostruire le principali pratiche utilizzate dalle organizzazioni per la gestione e l’implementazione della CVI e di come esse vengono comunicate internamente attraverso modelli, policies e linee guida. Dopo un’analisi della letteratura di riferimento in materia di comunicazione visiva, design e branding, affronterò alcuni casi specifici tramite delle interviste qualitative ad alcuni brand manager, attraverso le quali verificherò e approfondirò l’effettiva presenza di sistemi di visual identity condivisi, per poi ricavare dalle realtà studiate similitudini e differenze.

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Discours, Christophe Crowlet James L. Mossière Jacques. « Analyse du mouvement par mise en correspondance d'indices visuels ». S.l. : Université Grenoble 1, 2008. http://tel.archives-ouvertes.fr/tel-00338382.

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Campagnaro, Marnie. « Libri e Albi illustrati. Analisi, strumenti e prospettive per una pedagogia dell'immaginazione ». Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3421674.

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Introduction There is a peculiar place that inhabits the immense space of children’s literature, a place in which children enjoy a “special statute”. This is a place where, unlike other fields and due to the illustrated book’s structural specificity according to which the story is narrated through images, children can hold an equal dialogue with adults, and, if properly stimulated, show unsuspected liveliness and reading ability sometimes greater than those of adults. This special place dwells in the literary space of the picturebook. Traditionally employed with very young children (nursery and infant school) as an instrument of initiation into the pleasure of reading, the picturebook is proving to be an excellent resource for reading promotion also with older children. Objectives The research intends to examine the potential of the picturebooks and illustrated books to develop cognitive and emotional processes of visual literacy, artistic awareness and formation of critical and imaginative thought. Description The research is divided into two parts. The first part of the research concerns an international investigation on the picturebook, aiming to delineate the state of the art, in Italy and abroad, of the features, nature , potential and future perspectives of the contemporary picturebook. Such investigation has been accomplished by gathering the opinions expressed by a selected group of experts using Delphi Method. The investigation has involved some of the most important scholars of the international scientific community. Three categories of experts have been identified: professors and critics, illustrators, publishers. The expert group involved was formerly formed of 38 experts coming from Italy and the rest of the world: Europe (France, Germany, Great Britain, Portugal, Slovakia), Northern America (USA and Canada), Central America (Mexico) Africa (Senegal), Asia (Korea), and Australia. The second part of the research has employed the information gathered in the first part of the research to accomplish an observation research on the field. The field research has taken place in a primary school of the Province of Padua. Using the participant observation, the research group has observed the modalities of interaction, the response typology and the preferences expressed by children (6, 8 and 10 years) about the picturebooks and the illustrated books presented. The research has lingered over a the reading, analysis and iconic interpretation of the illustrated version of Red Riding Hood, Hansel & Gretel and Bluebeard. Children have been incited to move and orient themselves inside the aesthetic-visual dimension, and will be invited to express their critical evaluation through the comparison of seven different illustrated versions of the same fairy tale. The instruments of analysis employed for the observation research have been integrated by the use of a diary on the part of the child and of his family. A figurative questionnaire has been used too. Results The results have pointed out that there is a connection between the formation of the aesthetic-visual dimension and the formation of critical and imaginative thought: teaching to look into and through things and visual-emotional literacy are deeply tied to the constructivist mental operation of meaning attribution and “meaning making”.
Introduzione C’è un luogo singolare che abita lo spazio sterminato della letteratura per l’infanzia, un luogo in cui i bambini godono di uno statuto speciale. È un luogo in cui, a differenza di altri ambiti e grazie al peculiare linguaggio della narrazione, i bambini possono dialogare alla pari con gli adulti e, se opportunamente sollecitati, dimostrano vivacità e abilità di lettura insospettabili, a volte perfino superiori a quelle degli adulti. Questo luogo speciale dimora nello spazio letterario degli albi illustrati, altresì denominati picturebook. Tradizionalmente utilizzato con i bambini più piccoli (asilo nido e scuola dell’infanzia) quale strumento di iniziazione al piacere di leggere, il picturebook si sta rivelando un’ottima risorsa anche per la promozione della lettura nei ragazzi più grandi. Obiettivi Focus della presente ricerca è quello di studiare le potenzialità che l’albo e il libro illustrato hanno di sviluppare processi emozionali e cognitivi di visual literacy, di formazione del pensiero critico e immaginifico nei bambini in età scolare. Descrizione La ricerca è suddivisa in due parti. La prima parte riguarda una ricognizione internazionale sul picturebook che ha l’obiettivo di delineare lo stato dell’arte, in Italia e all’estero, delle caratteristiche, della natura, delle potenzialità di utilizzo e le prospettive dell’albo illustrato contemporaneo. Tale ricognizione è stata effettuata raccogliendo i pareri espressi da un selezionato gruppo di esperti attraverso la tecnica Delphi. La ricerca ha coinvolto gli studiosi più accreditati della comunità scientifica internazionale che, oltre a fornire i paradigmi più significativi della ricerca sul territorio mondiale, hanno orientato il successivo lavoro di sperimentazione sul campo. Il gruppo di esperti coinvolto nella prima parte della ricerca è costituito da 28 esperti provenienti dall’Italia e da altri paesi europei ed extraeuropei: Francia, Germania, Gran Bretagna, Portogallo, Slovacchia, USA e Canada, Senegal, Messico, Corea e Australia. La seconda parte della ricerca consiste nella restituzione dei risultati di una sperimentazione osservativa sul campo, a partire dalle indicazioni raccolte nella prima parte della ricerca stessa. Durante la sperimentazione, attuata in una scuola primaria della provincia di Padova, si sono osservate le modalità di interazione, la tipologia di risposta e le preferenze espresse dai bambini (6, 8 e 10 anni) rispetto ad alcuni albi e libri illustrati di fiabe. La ricerca si è soffermata sulla lettura, sull’analisi e sull’interpretazione iconica di Cappuccetto Rosso, Hansel & Gretel, Barbablù. I bambini sono stati sollecitati a muoversi e orientarsi all’interno della dimensione estetico-visiva e invitati a formulare una propria valutazione critica attraverso il confronto di sette diverse versioni illustrate della stessa fiaba. Oltre alle note etnografiche, si sono utilizzati ulteriori strumenti di indagine quali il diario di bordo e di famiglia e un questionario figurativo. Risultati I risultati hanno evidenziato che esiste una relazione tra il piacere della lettura e la formazione della dimensione estetico-visiva, del pensiero critico e immaginifico. E, ancora, quanto l’educazione allo sguardo e l’alfabetizzazione visivo-emozionale siano intimamente legate all’operazione mentale di stampo costruttivista dell’attribuzione di senso, del “fare significato”. Grazie alla loro articolata struttura visiva, gli albi e i libri illustrati hanno suscitato, attraverso il coinvolgimento emotivo e il sentimento della curiosità, una lettura “sensuale” del libro, hanno favorito nel giovane lettore l’attitudine all’osservazione, hanno incoraggiato una maggiore partecipazione nell’interpretazione della storia.

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Larsen, Morten. « When Colour Narrates : Colour as a Narrative Tool in Audio-visual Storytelling ». Master's thesis, Akademie múzických umění v Praze.Filmová a televizní fakulta. Knihovna, 2017. http://www.nusl.cz/ntk/nusl-371144.

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This thesis explores the use of colour as a narrative tool within the realm of cinema. Even though colours have taken up a considerable role in the history of film, colour theory and colour aesthetic have not received reasonable attention in film studies compared to other fields. The thesis reflects upon why this might be the case based on the hypothesis by David Bachelor that a history long “chromophobia” has existed in the arts in the Western world. The paper then seeks to give an overview of relevant theory of colour that tries to shed light on the multiplex nature of colour itself, and in continuation to that, its ability to convey meaning within audio-visual story-telling. Finally, this paper shall investigate the selected works by three directors - Eric Rohmer, Rainer Werner Fassbinder and Alfred Hitchcock - that utilize colour narratively within their work but in various ways. It is the aim of this thesis that the analysis supported by theory shall prove the quality and unique property of colour in audio-visual storytelling.

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Yssaad-Fesselier, Rosa. « Analyse psychophysique du champ visuel : détection, identification, effet de groupement et apprentissage perceptif ». Lyon 2, 2001. http://theses.univ-lyon2.fr/documents/lyon2/2001/yssaad_r.

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L'objectif de ce travail est de comprendre le fonctionnement de la vision périphérique. Pour ce faire, trois études ont été réalisées. Dans la première, nous avons mesuré le facteur de mise à l'échelle nécessaire pour obtenir le même niveau de performances de la détection et de l'identification de lettres symétriques à trois excentricités (2, 4 et 8ʿ). Les résultats ont montré qu'un facteur de mise à l'échelle permettait de réaliser le même niveau de performances de détection et d'identification à travers le champ visuel périphérique. Cependant, un résultat non attendu était que les deux tâches évoluaient de façon identique à travers la périphérie. L'analyse des erreurs de cette expérience argumente en faveur d'une supériorité du traitement de l'orientation tangentielle en vision périphérique. Une deuxième expérience portait sur l'effet de groupement (i. E. , baisse d'acuité visuelle lorsqu'une cible est présentée dans un environnement chargé) que l'on mesure grâce à un stimulus composé d'une cible entourée par des distracteurs. Nos résultats ont montré que l'effet de groupement s'étendait sur une distance équivalente à 20% de l'excentricité. Nous avons conclu que l'effet de groupement ne dépend pas uniquement de la similarité entre cible et pourtour mais aussi de la différence entre les deux. Afin d'ouvrir une nouvelle perspective de l'étude de l'apprentissage perceptif en vision périphérique, nous proposons une technique innovante inspirée de la technique d'image de classification (Ahumada, 1996). Ainsi, la troisième série d'expériences était consacrée à l'apprentissage d'un stimulus bruité. L'observateur devait détecter la présence ou l'absence d'un signal dont il ignorait la forme. Les résultats ont montré que l'observateur pouvait apprendre un signal dont il ignorait la forme, cet apprentissage nécessitait un feed-back multi-modal (visuel et auditif). En conclusion, la vision périphérique n'est pas une version réduite de la vision fovéale. Elle a ses propres caractéristiques qui lui permettent de traiter le flux d'informations qui lui provient de l'environnement.

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Yssaad-Fesselier, Rosa Knoblauch Kenneth. « Analyse psychophysique du champ visuel détection, identification, effet de groupement et apprentissage perceptif / ». [S.l.] : [s.n.], 2001. http://demeter.univ-lyon2.fr:8080/sdx/theses/lyon2/2001/yssaad_r.

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Périssé, Amélie. « Color formulation algorithms improvement through expert knowledge integration for automotive effect paints ». Thesis, Pau, 2020. http://www.theses.fr/2020PAUU3025.

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Aujourd’hui, le marché de la peinture automobile est gouverné par une demande pour des couleurs profondes et vives avec effets. Dans le domaine de la peinture automobile, l’exigence est très haute car la couleur est associée à un signe de qualité. Dans une collision classique, différentes parties du véhicule peuvent être endommagées avec généralement une partie de la carrosserie qui est touchée. La partie endommagée doit être réparée, poncée et préparée avant d’être repeinte. Pour réduire les coûts, le carrossier doit préparer une peinture avec un bon contretypage de teinte, et ce aussi vite que possible. Il s’agit donc pour la formulation de la peinture de réparation de reproduire les effets, aussi bien colorés que texturés, à partir de pigments absorbants ou à effets (particules d’aluminium, de nacre …). Il est relativement simple de qualifier les effets colorés à partir des courbes de réflectance puis des coordonnées CIELab. Cependant, la définition de la texture engendrée par les particules à effets est assez complexe et n’est encore qu’à ses prémices, avec des paramètres qui souvent ne correspondant pas aux phénomènes réellement perçus par l’œil humain. Dans le cadre de ce travail de thèse, la mobilisation de connaissances expertes à travers différentes sessions de tri libre et de brainstorming a permis la mise en évidence de descripteurs de texture réellement perceptifs. De plus, la mise en place de métriques de texture conçues à partir de préconisations réellement perceptives, a rendu possible l’obtention de valeurs correspondant à un observateur moyen pour chacun de ces paramètres descripteurs. Ces paramètres ayant été élaborés à partir des observations d‘évaluateurs expérimentés. La transposition de ces vérités terrain en descripteurs physiques de texture a permis l’obtention d’une corrélation entre le perceptible et le mesurable. Dans la procédure développée, l’œil humain a été remplacé par un appareil photo numérique agissant en qualité d’intégrateur tristimulaire d’informations radiométriques. En essayant de reproduire les conditions d’observation lors de la phase d’acquisition d’images, il a été ainsi possible de caractériser les phénomènes de texture par analyse d’image et de les corréler aux valeurs de l’observateur moyen préalablement défini
Nowadays, the automotive coating market is governed by a demand for deep and vibrant colors with effects. In this field, the requirement is very high because the color is associated with a sign of quality. In a typical collision, different parts of the vehicle may be damaged. The damaged part must be repaired, sanded and prepared before being painted. To reduce costs, the body shop must then prepare a paint with a good color matching, and thus as fast as possible. It is therefore necessary for the formulation of the repair coating to reproduce the effects, both colored and textured, from absorbent or effect pigments (aluminum particles, pearlescent materials …) from a characterization of the concerned vehicle coating. It is relatively simple to qualify the colored effects from the reflectance curves and then the CIELab coordinates. However, the description of the texturing effect generated by the distribution of effect particles at the microstructure scale is quite complex. The metrological approach of the perceptive properties is still at its beginnings. The parameters used do not necessarily correspond directly to the phenomena actually perceived by the human eye. As part of this thesis work, the mobilization of expert knowledge through various sessions of free sorting and brainstorming on coated samples made it possible to highlight really perceptive texture descriptors. These descriptors have been the subject of "objective" evaluations by experienced observers. They thus made it possible to associate a quantitative evaluation scale with each descriptor. This stage of the present thesis work allowed the establishment of ground truth data materialized by a set of reference samples representing different ordered levels of a descriptor. These ground truth data were then used to design a set of measurable physical texture descriptors that were directly correlated to perceptual scales constructed in the previous step. In the procedure developed, the human eye has been replaced by a digital camera acting as a tristimulus integrator of radiometric information. The image acquisition phase was a decisive step in the process: it was necessary to reproduce the conditions of evaluation of the properties perceived, recognized and retained during the various stages using expert human observers. It was then possible to characterize the texture phenomena by image analysis and to correlate them with the values of the previously defined mean observer

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Kasurinen, Viktor. « Coca-Cola Company - En färgstark personlighet : En undersökning i färgers förmåga att förmedla varumärkesidentitet i reklamfilm ». Thesis, Högskolan Dalarna, Bildproduktion, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:du-30725.

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Denna uppsats ämnar undersöka hur färg kan användas i reklamfilm för att uttrycka en varumärkesidentitet och stärka filmers bildspråk. I detta syfte så genomfördes en komparativ bildanalys där tre reklamfilmer från företaget Coca-Cola Company jämfördes utifrån hur filmerna använde sig av färg. Studien fann att reklamfilmerna använder sig av färgnyanser för att kommunicera en specifik varumärkesidentitet till konsumenten samt att reklamfilmerna använde sig av sina egna varumärkesfärger i filmen för att öka kännedomen kring företaget. I filmerna så tillämpades även ett flertal tekniker i färgkorrigering, ljussättning och scenografi för att med större säkerhet skapa en tilltalande färgpalett och bibehålla åskådarens uppmärksamhet.

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Lindberg, Amadeus, et Samuel Österlund. « Tecknets roll i visuellt narrativ : En semiotisk analys av tangosekvensen i Moulin Rouge ! » Thesis, Högskolan Dalarna, Bildproduktion, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:du-31623.

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Baz Luhrmanns kontroversialla musikal Moulin Rouge! är på grund av dess blanding mellan Hollywood och Bollywood fylld av visuell attraktion. Denna visuella attraktion i samband med termen visuellt narrativ, som fått ett ökat intresse inom filmbranschen, skapar ett intresse att undersöka hur denna film använder visuellt narrativ för att berätta en berättelse och genom detta skapa en större förståelse kring visuellt narrativ. Uppsatsen har undersökt hur tangosekvensen i Moulin Rouge! har använt visuellt narrativ genom att genomföra en semiotisk analys av sekvensens bilder. Uppsatsen har sett närmre på semiotiska tecken och undersökt hur tecken påverkar det visuella narrativet. Den semiotiska analysen delade in sekvensen i olika avsnitt så den kunde fördjupa sig i alla tecken i en bild. Bildens avsnitt var: färg & ljus, form & objekt, bildkomposition & karaktärer och koreografi & blickar. Till sist analyserades dessa avsnitt tillsammans i avsnittet komponenternas samverkan. Slutsatsen blev att sekvensen använder semiotiska tecken i alla bildkomponenter som undersöktes för att bidra till berättelsen genom att använda visuell information för att förmedla känsla och narrativ.

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Thèses sur le sujet « Visual analisy »

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