Dissertations / Theses on the topic 'Descriptor transformation'
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Bell, Simon J. G. "Numerical techniques for smooth transformation and regularisation of time-varying linear descriptor systems." Thesis, University of Reading, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284311.
Full textBohi, Amine. "Descripteurs de Fourier inspirés de la structure du cortex visuel primaire humain : Application à la reconnaissance de navires dans le cadre de la surveillance maritime." Thesis, Toulon, 2017. http://www.theses.fr/2017TOUL0002/document.
Full textIn this thesis, we develop a supervised object recognition method using new global image descriptors inspired by the model of the human primary visual cortex V1. Mathematically speaking, the latter is modeled as the semi-discrete roto-translation group SE (2,N)=R² x ZN semi-direct product between R² and ZN. Therefore, our technique is based on generalized and rotational Fourier descriptors defined in SE (2,N) , and which are invariant to natural geometric transformations (translations, and rotations). Furthermore, we show that such Fourier descriptors are weakly complete, in the sense that they allow to distinguish over an open and dense set of compactly supported functions in L² (SE(2,N)) , hence between real-world images. These descriptors are later used in order to feed a Support Vector Machine (SVM) classifier for object recognition purposes. We have conducted a series of experiments aiming both at evaluating and comparing the performances of our method against existing both local - and global - descriptor based state of the art techniques, using the RL, the CVL, and the ORL face databases, and the COIL-100 image database (containing various types of objects). The obtained results have demonstrated that our approach was able to compete with many existing state of the art object recognition techniques, and to outperform many others. These results have also shown that our method is robust to noise. Finally, we have applied the proposed method on vessels recognition in the framework of maritime surveillance
Chu, D., and V. Mehrmann. "Minimum Norm Regularization of Descriptor Systems by Output Feedback." Universitätsbibliothek Chemnitz, 1998. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-199801177.
Full textColeman, Graham Keith. "Descriptor control of sound transformations and mosaicing synthesis." Doctoral thesis, Universitat Pompeu Fabra, 2016. http://hdl.handle.net/10803/392138.
Full textEl mostreig, com a tècnica musical o de síntesi, és una manera de reutilitzar expressions musicals enregistrades. En aquesta dissertació s’exploren estratègies d’ampliar la síntesi de mostreig, sobretot la síntesi de “mosaicing”. Aquesta última tracta d’imitar un senyal objectiu a partir d’un conjunt de senyals font, transformant i ordenant aquests senyals en el temps, de la mateixa manera que es faria un mosaic amb rajoles trencades. Una d’aquestes ampliacions de síntesi consisteix en el control automàtic de transformacions de so cap a objectius definits a l’espai perceptiu. L’estratègia elegida utilitza models que prediuen com es transformarà el so d’entrada en funció d’uns paràmetres seleccionats. En un cas, els models són coneguts, i cerques númeriques es poden fer servir per trobar paràmetres suficients; en l’altre, els models són desconeguts i s’han d’aprendre a partir de les dades. Una altra ampliació es centra en el mostreig en si. Mesclant múltiples sons a la vegada, potser és possible fer millors imitacions, més específicament millorar l’harmonia del resultat, entre d’altres. Tot i així, utilitzar múltiples mescles crea nous problemes computacionals, especialment si propietats com la continuïtat, important per a la síntesis de mostreig d’alta qualitat, han de ser preservades. En aquesta tesi es presenta un nou sintetitzador mosaicing que incorpora tots aquests elements: control automàtic de transformacions de so fent servir models, mescles a partir de descriptors d’harmonia i timbre perceptuals, i preservació de la continuïtat del context de mostreig i dels paràmetres de transformació. Fent servir proves d’escolta, l’algorisme híbrid proposat va ser comparat amb algorismes clàssics i contemporanis: l’algorisme híbrid va donar resultats positius a una varietat de mesures de qualitat.
Parrein, Benoît. "Description multiple de l'information par transformation Mojette." Phd thesis, Université de Nantes, 2001. http://tel.archives-ouvertes.fr/tel-00300613.
Full textLes codages à description multiple offrent une alternative à la transmission hiérarchisée de l'information en brisant la scalabilité de la source aux abords du canal. Dans cette thèse, nous proposons une méthode originale de description multiple qui réalise une protection différenciée de chaque niveau hiérarchique de la source en fonction des propriétés dynamiques du canal de transmission.
La transformation Mojette (transformation de Radon discrète exacte) est une transformation unitaire qui permet de partager un volume de données en un ensemble plus ou moins redondant de projections équivalentes. L'évolution de ce type d'opérateur initialement utilisé dans un espace continu pour la reconstruction tomographique étend le concept de support d'image à celui de mémoire tampon géométrique pour données multimédias. Ce codage à description multiple, généralisé à N canaux, autorise la reconstruction de la mémoire initiale de manière déterministe par des sous-ensembles de projections dont le nombre caractérise le niveau de protection. Ce schéma est particulièrement adapté au mode de transport par paquets sans contrôle d'intégrité extensible du canal de transmission. La hiérarchie de la source est dans ce cas communiquée sous forme transparente pour le canal via des descriptions banalisées.
L'évaluation du codage est effectuée en comparant les débits engendrés avec ceux d'un code MDS (Maximum Distance Separable) qui fournissent une solution optimale dans le nombre de symboles nécessaires au décodage. La relaxation des propriétés MDS dans un code (1+ε)MDS avec la transformation Mojette demande une légère augmentation de débit au profit d'une complexité réduite.
L'application sur des schémas de compression d'images valide concrètement l'adaptation possible des sources actuelles à un canal de type best-effort. L'utilisation dans un environnement distribué (micro-paiement, stockage distribué de données multimédia) illustre en outre un partage sécurisé de l'information.
En perspectives de ce travail, nous avons abordé l'intégration de cette méthode dans un protocole de transmission scalable multimédia et étudié une version probabiliste du système.
Garai, Jozsef. "Thermodynamic description and phase transformation of highly symmetrical monoatomic structures." FIU Digital Commons, 2007. http://digitalcommons.fiu.edu/etd/3614.
Full textНікульченко, Артем Олександрович. "Методи та інформаційна технологія децентралізованого гарантуючого керування запасами у мережах поставок з невизначеними запізнюваннями." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38791.
Full textThe dissertation for a candidate degree of technical sciences, specialty 05.13.06 – Information Technologies. – The National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2018. The thesis focuses on the development of methods and information technology (IT) of decentralized guaranteed inventory control in supply networks (SN) with uncertain transportation delays. Modern information technologies of SN control are analyzed. The mathematical model of the inventory control process at a local node of the SN and descriptor transformation of the model have been suggested. The control law is formulated in the form of linear state feedback. The work suggests an extension of the invariant ellipsoid method based on building of the Lyapunov-Krasovskii functional. Controller synthesis problem has been represented as the semidefinite programming problem. Suggested improvements to the method of forecasting the consumer demand for physical resources based on building a sales curve vectors. The suggested approach ensures optimal compensation of external demand influence on the level of resource stocks by the defined criteria. Suggested approach also ensures guaranteed value of the local quadratic control cost. Suggested improvements to the method of determining the maximum allowed delay. Using the comparison method and Lyapunov vector functions, the stability of the managed SN is analyzed. The thesis also provides implementation strategy for the suggested IT, as well as the diagram of the IT components. The results have been used by commercial companies, as well as in the educational process at the National Technical University "KhPI".
Нікульченко, Артем Олександрович. "Методи та інформаційна технологія децентралізованого гарантуючого керування запасами у мережах поставок з невизначеними запізнюваннями." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38702.
Full textThe dissertation for a candidate degree of technical sciences, specialty 05.13.06 – Information Technologies. – The National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2018. The thesis focuses on the development of methods and information technology (IT) of decentralized guaranteed inventory control in supply networks (SN) with uncertain transportation delays. Modern information technologies of SN control are analyzed. The mathematical model of the inventory control process at a local node of the SN and descriptor transformation of the model have been suggested. The control law is formulated in the form of linear state feedback. The work suggests an extension of the invariant ellipsoid method based on building of the Lyapunov-Krasovskii functional. Controller synthesis problem has been represented as the semidefinite programming problem. Suggested improvements to the method of forecasting the consumer demand for physical resources based on building a sales curve vectors. The suggested approach ensures optimal compensation of external demand influence on the level of resource stocks by the defined criteria. Suggested approach also ensures guaranteed value of the local quadratic control cost. Suggested improvements to the method of determining the maximum allowed delay. Using the comparison method and Lyapunov vector functions, the stability of the managed SN is analyzed. The thesis also provides implementation strategy for the suggested IT, as well as the diagram of the IT components. The results have been used by commercial companies, as well as in the educational process at the National Technical University "KhPI".
Shpotyuk, O., M. Brunner, I. Hadzaman, V. Balitska, and H. Klym. "Analytical description of degradation-relaxation transformations in nanoinhomogeneous spinel ceramics." Thesis, Abstract Book of International research and practice conference: Nanotechnology and nanomaterials. 24-27 August 2016. Lviv, Ukraine. P.622, 2016. http://hdl.handle.net/123456789/3081.
Full textVacek, Michal. "Detekce poznávací značky v obraze." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2009. http://www.nusl.cz/ntk/nusl-235496.
Full textLe, Duc Chan. "Transformation d'ontologies basées sur la logique de description : Application dans le commerce électronique." Phd thesis, Université de Nice Sophia-Antipolis, 2004. http://tel.archives-ouvertes.fr/tel-00214145.
Full textZulkifli, Ediansjah. "Consistent description of radiation damping in transient soil-structure interaction." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1217499921691-59045.
Full textIn der Dynamik der Boden-Bauwerk-Interaktion wird der Boden in vielen Fällen durch ein unbegrenztes elastisches Medium beschrieben, wodurch das Phänomen der Abstrahldämpfung begründet wird. Diese Dämpfung entsteht durch Energietransfer von der erregten Struktur in den Boden durch Wellenausbreitung und reduziert somit die Strukturschwingungen. Um das infinite Bodengebiet dennoch durch finite Elemente beschreiben zu können, werden üblicherweise als Hilfsmaßnahme künstliche sogenannte absorbierende Ränder eingeführt. In dieser Arbeit wird eine alternative Methode zur Darstellung des unbegrenzten Mediums in der Dynamik vorgelegt. Im Prinzip handelt es sich um eine Kopplung der Rand-Element-Methode (REM) für den unendlichen Boden (das sogenannte Fernfeld) im Frequenzbereich und der Finite-Element-Methode (FEM) für das Nahfeld im Zeitbereich. Dieses alternative Verfahren vermeidet die Einführung künstlicher Ränder. Das Verfahren basiert auf einer rationalen Beschreibung der dynamischen Steifigkeit des Fernfeldes im Frequenzbereich. Diese Steifigkeit wird in der vorliegenden Arbeit durch die Rand-Element-Methode erzeugt. Die Matrix-wertigen Koeffizienten der rationalen Frequenzfunktion werden durch Minimierung des Fehlerquadrates berechnet. Die Transformation dieser Frequenzdarstellung in den Zeitbereich gelingt durch algebraische Überführung der rationalen Funktion in ein in der Frequenz lineares Hypersystem mit einer zugeordneten Zustandsgleichung erste Ordnung im Zeitbereich. Dieser Prozess hat sich als numerisch effektiv erwiesen und erfordert darüberhinaus keine Fourier-Transformation. Das entwickelte Vorgehen wird in dieser Arbeit an Problemen der dynamischen Boden-Bauwerk-Interaktion mit einer großen Anzahl von Freiheitsgraden erprobt. Diese Freiheitsgrade folgen aus der Diskretisierung in der Koppelfuge zwischen Boden und Struktur, der Diskretisierung der Struktur selbst und aus der Überführung in das Hypersystem mittels interner Variablen. Das neue Verfahren eignet sich insbesondere für Systeme mit transienter Erregung, wie sie beim An- und Auslaufen von Rotationsmaschinen ensteht. Der theoretische Teil der Arbeit wird geprägt durch Elemente der Systemtheorie und setzt sich zudem mit typischen Stabilitätsproblemen auseinander, die aus der rationalen Beschreibung entstehen. Der praktische Teil präsentiert Konvergenzstudien und numerische Ergebnisse für Boden-Bauwerk- Interaktionsprobleme mit geschichtetem Boden bei transienter Erregung mit Resonanzdurchlauf. Zudem gelingt eine Darstellung der Abstrahldämpfung in Form des Dämpfungsgrades D, wie er in der klassischen Strukturdynamik verwendet wird
Matusiak, Stanislaw. "Description invariante et locale des formes planes : application à l'indexation d'une base d'images." Valenciennes, 1999. https://ged.uphf.fr/nuxeo/site/esupversions/7570969d-50dd-44f1-84ef-c2e50a0fa07d.
Full textThis Ph. D. Contributes to the subject of indexing and pattern recognition in an image database constituted of object contours, by the use of local invariant descriptions. Our approach allows to recognize objects, even if they are partially occluded or observed at different viewpoints, since it is based on a local and invariant characterization of contours. One of the fundamental problems of indexing an image database resides in the choice of the invariant description of the image. Indeed, it is agreed that the request never corresponds exactly to the research image, affine transformations can separate them. Hence the description of the contour has a possess invariance properties so as to confer robustness to the recognition system. A general framework allowing to unify different local descriptions has been elaborated. This unification lead us propose two invariant descriptions with respect to affine transformations: the first one is based on points of interest of curves and the second one on the multi-scale analysis contours. Invariant descriptions, proposed in this work, have been applied to retrieval of objects-contours in image database. First of all, we have proposed a solution to the problem of object retrieval by sketch. The user draws his request on a graphic interface: the request image is made of a contour on uniform background. Then, its description by multi-scale curvatures allows to extract indexes. Finally, to undertake a rapid retrieving from a large image database, a mechanism of indexing based on the geometric hashing has been developed
Catalán, García Núria. "Sources, transformations and controls of dissolved organic matter (DOM) in a Mediterranean catchment = Fonts, transformacions i controls de la matèria orgànica dissolta (DOM) a una conca Mediterrània." Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/126620.
Full textLa materia orgánica disuelta (DOM) es transformada activamente en las aguas continentales. La cantidad y calidad de la DOM vienen definidas por el paisaje, que controla tanto su origen como los procesos que la transforman. Esta tesis busca desentrañar las fuentes, controles y transformaciones de la DOM en una cuenca mediterránea mediante el análisis de la variabilidad natural de la DOM y el uso de diseños experimentales de laboratorio. La región mediterránea presenta una marcada estacionalidad caracterizada por la intermitencia de flujo, como la que presentan los torrentes efímeros que drenan la cuenca estudiada, mientras que el cuerpo de agua receptor, es una laguna dominada por vegetación sumergida. La calidad de la DOM en los torrentes está definida por las propiedades del paisaje y varía de manera estacional. En otoño, la DOM presenta un carácter aromático relacionado con variables hidromorfológicas. En invierno y primavera, se acentúa el origen microbiano de la DOM y surgen diferencias espaciales ligadas a los diferentes tipos y usos del suelo. El efecto de los procesos de foto-y biodegradación son más fuertes sobre las fuentes alóctonas de DOM que sobre las autóctonas. Estas diferencias coinciden con los trabajos que cuestionan el paradigma clásico que relaciona la DOM alóctona con materiales no reactivos y la DOM autóctona con materiales lábiles. Las tasas de cambio instantáneas en las propiedades de la DOM muestran que no se puede asumir que los cambios cualitativos durante su degradación sigan un patrón regular en el tiempo. La adición de pequeñas cantidades de carbono lábil no incrementa la descomposición de la DOM natural presente en diferentes cuerpos de agua. No se han encontrado por lo tanto evidencias de la existencia de efecto priming en aguas dulces. Además, la disponibilidad de nutrientes y de mayor superficie para favorecer la unión celular no parece tener ningún papel significativo en el efecto priming. Diferentes fuentes y procesos se reflejan en la variabilidad de la DOM de la laguna. El ciclo fenológico de la vegetación sumergida y los pulsos de las aguas torrenciales de los torrentes efímeros son los principales determinantes de la calidad de la DOM.
Kith, Kimcheng. "Contribution à la description des formes par la transformée en ondelettes." La Rochelle, 2005. http://www.theses.fr/2005LAROS137.
Full textThis thesis concerns the 2D object recognition systems using contours. The aim is to retrieve the most similar objects in a database to an object query. To do that, it is necessary to describe the objects of the database and express the dissimilarity measure among objects. One of the fondamental problems of the recognition and retrieval systems is the choice of the invariant description. Retrieved objects obtained by actual systems rarely match queries. Similitude or affine transforms may occur among them. To be robust, a recognition system must have a good invariance properties. In the first part of this thesis, some mathematical tools are studied in the frame of pattern recognition as the Moments, the Fourier and the multi-scale descriptors. The second part is dedicate to the wavelet transform theory which enables us to propose two new descriptors. These descriptors were compared and assessed to the best actual descriptors. The experimentations were performed on the MPEG7 CE-1 data base and the assessment showed that these two descriptors are real concurrents to the best actual descriptor (Fourier descriptor) and better than the Multi-scale descriptor chosen by the MPEG7 norm. Moreover, the proposed descriptors are better in term of complexity and free-choice of kernels depending on applications
Pi, Lei. "Langage de description d'architecture : sémantique et analyse comportementale." Toulouse, ISAE, 2010. http://www.theses.fr/2010ESAE0008.
Full textThe evolution of the complexity of critical embedded systems currently leads to use on the one hand modeling languages closest to the specifications of the designer’s job, and on the other hand verification tools (model checker) to ensure the correction of the system with respect to the correctness requirements and the real-time constraints. It is in this context that the project TOPCASED has been launched to propose a framework to develop critical real-time systems based on formal verification and dedicated languages. The methods and tools from this work are an integration of formal verification in the process and platform development. AADL (the SAE Architecture Analysis and Design Language) est un langage de description d’architecture qui permet de décrire autant les aspects matériels que les composants logiciels d’un système. In order to make easer the connection of model checkers to those languages, the pivot FIACRE language (Format Intermédiaire pour les Architectures de Composants Répartis Embarqués) has been developed. It is powerful enough to support the expression of the semantics of real time. In this context, I studied the semantic of the AADL execution model and its expression in different formalisms, like TASM, BIP, ACSR and FIACRE. They revealed the need to unify these formalisms. I worked on a new definition of the semantics of the language FIACRE. Then I propose to enrich FIACRE by a suspend/resume operator and a mechanism for resource allocation of which usefullness is illustrated on several examples. However, the induced expressive power no longer permits the use of TPN for the verification of extended FIACRE models. Thus, I propose a translation of the extended FIACRE language into a class of TPN newly introduced in the environment Tina: Petri nets with stopwatches
Ninin, Andressa Pinter dos Santos. "Morfologia e distribuição de peixes da família Sciaenidae no estágio de transformação na costa sul e sudeste do Brasil." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/21/21131/tde-29062009-160750/.
Full textIn the southeast and south of Brazil, the Sciaenidae are among the most caught fishes on the shallow waters of the continental shelf. Spacial and temporal occurrence knowledge of individuals at the transformation stage is a fundamental information for understanding the life cycle of the species and, by extension, for preservation and management action. Morphological descriptions of Sciaenidae fishes at that developmental stage are scarce, preventing their taxonomic identification. In this work 22 species from the 28 of Sciaenidae in the southeast and south of Brazil are studied on the transformation stage based on material from the institutions that maintain collections of fish. Series of growth of 16 of these species were morphologically described and illustrated, as well as draft a key to identify the species that occur in the area. The spacial and temporal distribution of the samples were mapped, being estimated the time of birth and faced with the literature on growth and reproduction. It was observed that most species are strict to shallow waters of estuaries and bays, with evidence of the predominance of the time of birth (and therefore spawning) in the summer.
Gretton, Linda Burak. "The rhetorical helix of the biotechnology and pharmaceutical industries strategies of transformation though definition, description and ingratiation /." Greensboro, N.C. : University of North Carolina at Greensboro, 2007. http://libres.uncg.edu/edocs/etd/1435/umi-uncg-1435.pdf.
Full textTitle from PDF t.p. (viewed Oct. 22, 2007). Directed by Nancy Myers; submitted to the Dept. of English. Includes bibliographical references (p. 209-228).
Djenouhat, Manel Amel. "Un cadre sémantique formel pour la description, sélection et composition des services web." Thesis, Paris, CNAM, 2017. http://www.theses.fr/2017CNAM1137/document.
Full textThe aim of this thesis is to provide a suitable formal semantic framework that supports interoperability ofdifferent formalisms already used to describe and deploy a Web service. In other words, we contribute to thedevelopment of a rigorous mathematical formalism to describe a complex Web service that may change duringexecution and coordinate with other services adaptively. To achieve this goal, the steps of description, selectionand composition constitute the three major issues studied in this thesis.We proposed so, initially, through the use of the K semantic framework the K-WSDL : a Web servicesdescription language endowed with an operational semantics in terms of rewriting rules which can be executedand analyzed in Maude. We introduced, in a second step, WS-Sim, a new approach based on the category theorywhich evaluates the behavioral equivalence between services by representing each service by a category and byestablishing formal links (functor) between them. Finally, we present RMop-ECATNet (Refined Meta OpenECATNet): a formal model for the specification of services composition. product of the refinement of the Mop-ECATNets model, introduced initially by [LB14]. We extended and enriched this model at three distinct levels:at the structural, behavioural level and implementation levels
Sicouri, Gilles. "Modélisation, représentation, génération et description des transformations structurales dans le système DARC : applications aux réactions chimiques." Paris 7, 1985. http://www.theses.fr/1985PA077084.
Full textSerrière, Mickaël. "Modélisation des processus de transformation des dispersoi͏̈des dans un alliage d'aluminium 3003 : influence de la description des équilibres thermodynamiques locaux." Vandoeuvre-les-Nancy, INPL, 2004. http://www.theses.fr/2004INPL058N.
Full textA precipitation model is developped for a multicomponent alloy, in particular for 3003 aluminium alloy and multiphase precipitation during industrial thermal treatment. This model handle the evolution of the particle size distribution during different thermal treatments, either simple thermal treatment as isothermal holdings or more complex ther- mal treatment as industrial homogenisation treatment. Ln this way, the model is coupled to an equilibrium thermodynamic calculation software called Thermo-Calc. Ln a first time, we have studied the influence of the different description parameters which enter the model, then we have studied the influence of the way the equilibrium is thermodynamically described. Ln a second time, the modelling results are compared to experimental ones obtained in the frame of the VirCast project. Those results leads to satisfaying qualitative comparisons but do not permit quantitative comparisons. Ln order to enhance the results, the model must be coupled to an homogenisation model
Scheithauer, Gregor [Verfasser] [Akademischer Betreuer]. "A Service Description Method for Service Ecosystems - Meta Models, Modeling Notations, and Model Transformations / Gregor Scheithauer. Betreuer: Gregor Scheithauer." Bamberg : Universitätsbibliothek der Universität Bamberg, 2011. http://d-nb.info/1014896738/34.
Full textLubniewski, Pawel. "Recalage 3D/2D d'images pour le traitement endovasculaire des dissections aortiques." Thesis, Clermont-Ferrand 1, 2014. http://www.theses.fr/2014CLF1MM24/document.
Full textIn this study, we present our works related to 3D/2D image registrationfor aorti dissition. Its aim is to propose a visualization of medial datawhih an be used by physians during endovas ular proedures.For this purpose, we have proposed a parametrimodel of aorta, alleda Tubular Envelope. It is used to express the global shape and deformationsof the aorta, by a minimal number of parameters. The tubular envelope isused in our image registration algorithms.The registration by ITD (Image Transformation Descriptors) is our ori-ginal method of image alignment : itomputes the rigid 2D transformation between data sets diretly, without any optimization process.We provide thedefinition of this method, as well as the proposition of several descriptors' formulae, in the base of images of aorta. The technique allows us to quickly and a poarse alignment between data. We also propose the extension of theoriginal approach for the registration of 3D and 2D images.The complete chain of 3D/2D image registration techniques, proposedin this document, consists of the ITD stage, followed by an intensity basedhybrid method. The use of our 3D/2D algorithm, based on the image trans-formation descriptors as an initialization phase, reduces the computing timeand improves the efficiency of the presented approach.We have tested our registration methods for the medical images of several patients after endovasular treatment. Results have been approved by our clinical specialists and our approach.We have tested our registration methods for the medical images of several patients after endovascular treatment. Results have been approved by our clinical specialists and our approach may appear in the intervention rooms in the futur
Neumann, Katharina [Verfasser], and Siegfried [Akademischer Betreuer] Echterhoff. "A description of the Jacobson topology on the spectrum of transformation group C*-algebras by proper actions / Katharina Neumann. Betreuer: Siegfried Echterhoff." Münster : Universitäts- und Landesbibliothek der Westfälischen Wilhelms-Universität, 2011. http://d-nb.info/1027018009/34.
Full textNeumann, Katharina Verfasser], and Siegfried [Akademischer Betreuer] [Echterhoff. "A description of the Jacobson topology on the spectrum of transformation group C*-algebras by proper actions / Katharina Neumann. Betreuer: Siegfried Echterhoff." Münster : Universitäts- und Landesbibliothek der Westfälischen Wilhelms-Universität, 2011. http://d-nb.info/1027018009/34.
Full textLeloutre, Gery. "La transformation moderne de Bruxelles: Processus d’agencement de l’espace urbain bruxellois entre 1949 et 1979." Doctoral thesis, Universite Libre de Bruxelles, 2020. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/311995.
Full textDoctorat en Art de bâtir et urbanisme (Architecture)
info:eu-repo/semantics/nonPublished
Mavridou, Evanthia. "Robust image description with laplacian profile and radial Fourier transform." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENM065/document.
Full textIn this thesis we explore a new image description method composed of a multi-scale vector of Laplacians of Gaussians, the Laplacian Profile, and a Radial Fourier Transform. This method captures shape information with different proportions around a point in the image. A Gaussian pyramid of scaled images is used for the extraction of the descriptor vectors. The aim of this new method is to provide image description that can be suitable for diverse applications. Adjustability as well as low computational and memory needs are as important as robustness and discrimination power. We created a method with the ability to capture the image signal efficiently with descriptor vectors of particularly small length compared to the state of the art. Experiments show that despite its small vector length, the new descriptor shows reasonable robustness and discrimination power that are competitive to the state of the art performance.We test our proposed image description method on three different visual tasks. The first task is keypoint matching for images that have undergone image transformations like rotation, scaling, blurring, JPEG compression, changes in viewpoint and changes in light. We show that against other methods from the state of the art, the proposed descriptor performs equivalently with a very small vector length. The second task is on pattern detection. We use the proposed descriptor to create two different Adaboost based detectors for people detection in images. Compared to a similar detector using Histograms of Oriented Gradients (HOG), the detectors with the proposed method show competitive performance using significantly smaller descriptor vectors. The last task is on reflection symmetry detection in real world images. We introduce a technique that exploits the proposed descriptor for detecting possible symmetry axes for the two reflecting parts of a mirror symmetric pattern. This technique introduces constraints and ideas of how to collect more efficiently the information that is important to identify reflection symmetry in images. With this task we show that the proposed descriptor can be generalized for rather complicated applications. The set of the experiments confirms the qualities of the proposed method of being easily adjustable and requires relatively low computational and storage requirements while remaining robust and discriminative
Koussaifi, Maroun. "Modélisation centrée utilisateur pour la configuration logicielle en environnement ambiant." Thesis, Toulouse 3, 2020. http://www.theses.fr/2020TOU30212.
Full textAmbient intelligence aims to provide to human users applications and services that are personalized and adapted to the current situation. The ambient environment which surrounds the human consists of a set of connected objects and software components that are bricks used for the construction of applications by composition. The availability of these components can vary dynamically, in case of mobility for example. In addition, their appearance or disappearance is usually unanticipated. Moreover, in these dynamic and open environments, the user needs are not stable nor always well defined. To build these applications and provide the user with "the right applications at the right time", our team explores an original approach called "opportunistic software composition": the idea is to build applications on the fly by assembling software components present in the environment at the time, without relying on explicit user needs or predefined applications models. Here, it is the availability of the components that triggers opportunistically the on-the-fly building of applications. It is controlled by an intelligent system, called opportunistic composition engine, which decides on the "right" compositions to be made without user input. In such a way, the applications "emerge" dynamically from the ambient environment. Thus, emerging applications can be unexpected or unknown to the user. At the center of the system, the latter must be informed of these applications. On the first hand, she/he must be able to control them, i.e., accept or reject them, and if she/he has the required skills, modify them or eventually build applications herself/himself by assembling software components present in the ambient environment. However, in the control tasks, the user must be assisted as well as possible. On the other hand, in order for the opportunistic composition engine to build relevant assemblies in the absence of explicit needs, it must receive information from the user. In this thesis, we propose an approach based on Model Driven Engineering (MDE) in order to put the user "at the center of the loop". The objective is to present the emerging applications to the user, to assist him in his interventions and to extract useful feedback data to provide to the "intelligent" composition engine. Our solution is based on a metamodel for assembling software components, on different domain-specific languages (DSL) that support application descriptions, and on a graphical editor for editing applications and capturing user feedback. Different methods for model transformations are used to generate structural and semantic application descriptions for different users, from the applications models build by the intelligent engine. In addition, the descriptions can be easily adjusted to a particular human, by changing or adapting the DSL and the model transformations to the user's profile. Unlike the traditional use of MDE where tools and techniques are used by engineers to develop software and generate code, the focus in our approach is on the end users. The entire solution has been implemented and works coupled with the engine. That is to say, our solution is able to intercept the applications models built by the engine, to transform them into presentable models that can be understood and modified by the user, and finally to capture the user feedback and give it back to the engine to update its knowledge
Fanton, Laurent. "Estimation de l'âge au décès à partir de la 4ième côte." Toulouse 3, 2009. http://thesesups.ups-tlse.fr/1248/.
Full textTen observers estimated the quality of the observation of the variables on which is based the Iscan’s method on a sample of 59 4th ribs harvested from males. Results showed poor reproducibility and repeatability for all three variables (Wilcoxon test, kappa-coefficient) and revealed problems in the method. A geometrical and harmonic mathematical analysis (Fast Fourier Transform, Fourier’s descriptors) and visual description was then provided on a sample of 415 4th ribs harvested from males. Then new objectivised variables allowed to clarify the metamorphosis of the 4th rib with the age and to give the bases for a new method
Leloutre, Gery. "Tracer les contours de la transformation moderne de Bruxelles. Un enjeu de projet pour une métropole horizontale: Processus d'agencement de l'espace urbain bruxellois entre 1949 et 1979." Doctoral thesis, Universite Libre de Bruxelles, 2006. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/311995.
Full textDoctorat en Art de bâtir et urbanisme (Architecture)
info:eu-repo/semantics/nonPublished
Wong, Poh Lee. "Automated fish detection and identification." Thesis, La Rochelle, 2015. http://www.theses.fr/2015LAROS009.
Full textRecognition and identification of fish using computational methods have increasingly become a popular research endeavour among researchers. The methods are important as the information displayed by the fish such as trajectory patterns, location and colour could determine whether the fish are healthy or under stress. Current methods are not accurate especially when there exist thresholds such as bubbles and some lighted areas which might be identified as fish. Besides, the recognition and identification rate of the existing systems can still be improved to obtain better and more accurate results. In order to achieve a better recognition and identification rate, an improved scheme consisting of a combination of several methods is constructed. First of all, the first approach is to propose an object tracking method for the purpose of locating the position of fish for real-time videos. This includes the consideration of tracking multiple fish in a single tank in an automated way. The detection and identification rate may be slow due to the on-going tracking process especially in a real-time environment. A more accurate fish tracking method is proposed as well as a systematic method to identify and detect fish swimming patterns. In this research, the particle filter algorithm is enhanced and further combined with the motion detection algorithm for fish tracking. A dual camera system is also proposed to obtain better detection rate. The second approach includes the design and development of an enhanced method for dynamically cropping and segmenting images in real-time environment. This method is proposed to extract each image of the fish from every successive video frame to reduce the tendency of detecting the background as an object. The third approach includes an adapted object characterisation method which utilises colour feature descriptors to represent the fish in a computational form for further processing. In this study, an object characterisation method, GCFD (Generalized Colour Fourier Descriptor) is adapted to suit the environment for more accurate identification of the fish. A feature matching method based on distance matching is used to match the feature vectors of the segmented images for classifying the specific fish in the recorded video. In addition, a real-time prototype system which models the fish swimming pattern incorporating all the proposed methods is developed to evaluate the methods proposed in this study. Based on the results, the proposed methods show improvements which result in a better real-time fish recognition and identification system. The proposed object tracking method shows improvement over the original particle filter method. Based on the average percentage in terms of the accuracy for the dynamic cropping and segmentation method in real time, an acceptable value of 84.71% was recorded. The object characterisation method which is adapted for fish recognition and identification in real time shows an improvement over existing colour feature descriptors. As a whole, the main output of this research could be used by aquaculturist to track and monitor fish in the water computationally in real-time instead of manually
Guihal, David. "Modélisation en langage VHDL-AMS des systèmes pluridisciplinaires." Phd thesis, Université Paul Sabatier - Toulouse III, 2007. http://tel.archives-ouvertes.fr/tel-00157570.
Full textBalusek, Radim. "Vytvoření interaktivních pomůcek z oblasti 3D počítačové grafiky." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219471.
Full textArango, Duque Carlos. "Analysis of Micro-Expressions based on the Riesz Pyramid : Application to Spotting and Recognition." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSES062/document.
Full textMicro-expressions are brief and subtle facial expressions that go on and off the face in a fraction of a second. This kind of facial expressions usually occurs in high stake situations and is considered to reflect a humans real intent. They have been studied to better understand non-verbal communications and in medical applications where is almost impossible to engage in a conversation or try to read the facial emotions or body language of a patient. There has been some interest works in micro-expression analysis, however, a great majority of these methods are based on classically established computer vision methods such as local binary patterns, histogram of gradients and optical flow. Considering the fact that this area of research is relatively new, much contributions remains to be made. ln this thesis, we present a novel methodology for subtle motion and micro-expression analysis. We propose to use the Riesz pyramid, a multi-scale steerable Hilbert transformer which has been used for 2-D phase representation and video amplification, as the basis for our methodology. For the general subtle motion analysis step, we transform an image sequence with the Riesz pyramid, extract and lifter the image phase variations as proxies for motion. Furthermore, we isolate regions of intcrcst where subtle motion might take place and mask noisy areas by thresholding the local amplitude. The total sequence is transformed into a ID signal which is used fo temporal analysis and subtle motion spotting. We create our own database of subtle motion sequences to test our method. For the micro-expression spotting step, we adapt the previous method to process some facial regions of interest. We also develop a heuristic method to detect facial micro-events that separates real micro-expressions from eye blinkings and subtle eye movements. For the micro-expression classification step, we exploit the dominant orientation constancy fom the Riesz transform to average the micro-expression sequence into an image pair. Based on that, we introduce the Mean Oriented Riesz Feature descriptor. The accuracy of our methods are tested in Iwo spontaneous micro-expressions databases. Furthermore, wc analyse the parameter variations and their effect in our results
Perks, Sue. "A definition of the principles of Isotype and an investigation into their methods of diffusion and legacy : a description of Otto Neurath's original principles of Isotype followed by an investigation into their secondary diffusion in the hands of others not immediately connected with the Isotype Institute; shown through three case studies on transformation, graphic argument and graphic language with ultimate aim of evidencing and illuminating the legacy of the principles in a contemporary context." Thesis, University of Reading, 2012. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.576642.
Full textMennesson, José. "Méthodes fréquentielles pour la reconnaissance d'images couleur : une approche par les algèbres de Clifford." Phd thesis, Université de La Rochelle, 2011. http://tel.archives-ouvertes.fr/tel-00703445.
Full textHuang, Yuen-Chu, and 黃月珠. "Transformation of painting-The description of private behavior." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/00267681169608554703.
Full text國立臺灣藝術大學
造形藝術研究所
98
Painting is not the unique form at of artistic expression. Painting is a media which transmits painter’s messages through canvas and paints. Behavior is some kinds of expressive presentation and communication, the difference is the media comes to body parts. Should it have any connection between Painting and Behavior? What if painting is a behavior or behavior is expressed by painting? How would be the artistic format? This would be the main subject matter of this work. The artist uses her private behavior as well as her ideas of colors and spaces to manipulate painting materials and transform them into multi-dimensional presentations. These private behaviors, paintings and videos have been considered as spatial and conceptual interpreters or messengers. The painter attempts to gather the immaterial of past memories from the flood of thoughts and connect with its corresponding field of black and grey-space. The behavior is operated back and forth on painting, and behavior schemas are set inside the framework to illustrate the conversation and the connection with reality. This is an artistic presentation of reality other than a plane painting; it is a transformation of real other than a graphic painting. She proposes another spatial painting work, a room for painting transformation.
Lin, Yu-Chin, and 林裕欽. "Description of the Transformation and Management of Taiwan Traditional Technology." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/rfsms9.
Full text亞洲大學
經營管理學系
105
Taiwan electrical and electronic manufacturers are facing the transformation to industry 4.0 Era. This gives impact on Taiwan traditional technological industries and our technology industry is Taiwan's industry accounted for half of Taiwan's total output value and total export value. However, many small and medium enterprises in Taiwan are producing similar and related productions, it is really important to success on updated transformation and management philosophy, produce the professional and customized productions, understand their own advantages and use it, and compensate their own shortcomings. Those traditional technological companies, which got through the financial crisis in 2008, had their own successful management philosophy and it is hard to copy. The transformation and management of Taiwan traditional technology have been hold in high regards in recent years. Because if the companies could not success on these two factors, they would be out of phase very soon. Therefore, this essay will discuss about two factors base on this theory: (1) Business philosophy faced by the impact of the transition. (2) The management and prosecution philosophy of technological industry.
Shiang, Liang, and 梁香. "Individual the Shaping through Transformation-Creation Description By Liang-Shiang." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/jd366v.
Full text長榮大學
美術系(所)
104
Painting reflects people''s psychological state, life characteristics, personality, moods, and thoughts about beauty, painting literacy, also often project on paintings. This study, conducted from 2007 to 2015, aims to understand the image creation process, individuals’ use of symbols to explore their inner worlds and to help them survive difficulties in their external reality. This is the most primitive purpose for art – to communicate with other beings’ souls. Art is more like a fantastical way of exploring the halls of the subconscious mind and finding alternative spiritual paths. The creation of an image not only opens the door to the process of exploring and knowing one’s self as a whole but also paves the way for the creation of new images by involving life experiences directly. This study is based an inner experiences, so the discussion about Freud (1856-1939)and the complexes mentioned by Carl Gustav Jung,(1875-1961),are a good starting point for analyzing the mental pain caused by anxiety and trauma, which inherent in individuals infinite fermentation. This study investigated the phenomenon of trauma recovery, through three series of works – natural landscapes, ancient cities in Europe and America, and the characters to achieve individual shaping and individual significance. The author uses a process of self-perception and creation, seeking understanding of self and the meaning of existence, finding courage to face the realities of life, and pursuing some psychological equilibrium. Through this study aims to face unpredictable factors within troubled souls in the hopes of promoting recovery from trauma, it also aims to help them find their inner selves, in order for them to identify the creative process and transform the trauma into positive growth while reflecting on the meaning of life.
Huang, Shih-Wen, and 黃世汶. "A File Format Transformation Description and Its Application in Structural Engineering Computing." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/80428004100329874147.
Full text淡江大學
土木工程學系
91
Nowadays in the field of civil engineering both structural engineering computation and analysis depend heavily on computer assistance. Due to the different requirements of every step in design there is a variety of software to support our needs. Dexterously using computer-added software in the most effective way and further getting the best result in engineering are always the goal to pursue. The majority of the civil engineering application programs typically use text files as data source and destination. Different file formats are designed for different program requirements. Therefore, it is a necessity for application programs to have the ability to convert different file formats when users need to exchange information amount applications. Even though many application programs include different file format import and export functions, they lack flexibility because of the one-to-one converting approach. Moreover, the change of file format is inevitable with the release of new version of software. This makes the modification of programs very difficult in the future. Thus, the aims of the research are to develop a general mechanism and basic tool to support file format transformation. Data can then be exchanged among various programs using different file formats, which provides another approach to application program integration. The emphasis of this research is to use the technology of Markup language to define a file format transformation language─FFTL, which can fulfill the needs of transfer text data within files such as, retrieval, substitution, insertion, etc. Based on the description of FFTL, an interpreter and translator module written in Java is used to transform documents to different kinds of formats to provide various uses. In order for the user to fully understand the syntax of FFTL and to use the system proficiently, a user-friendly graphical interface has been developed. Thus, users can directly create and edit FFTL description files in an intuitive manner. On the other hand, the syntax examination module can verify the language structure to produce syntax-correct FFTL description files and to increase the accuracy and efficiency of editing. Finally, the system was integrated with the previously developed networked workspace for interoperating structural design programs to test the practicality of FFTL and to further improve the efficiency of file format transformations in the process of program executions to make the function of the workspace more competent.
Chi, Chang, and 張吉. "The Introspection of Struggle and Transformation — The Description of Chang Chi’s Paintings." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/28970351221694241707.
Full text國立嘉義大學
視覺藝術研究所
93
The value of art emphasizes the reflection of self-exploration and self-criticism. The researcher displayed the partial figures of human bodies and developed the four series of artistic creations—“Struggle”, “Stray”,” Return”, and “Transformation” by utilizing the mixed media, the digital photography, and the contrast of being and non-being. The purpose of this study is to truly illustrate the process of four phases of transformation through the artistic creation. In Chapter One, the researcher introduced the motivation, the purpose, the research methods, the procedures, the limitation, and the scope of the paper. Theconcept of personal creation was also introduced in the section. Chapter Two was focused on the examination of the rationale of artistic creation which includedthree levels: 1. Struggling with the chain of art spirit and obtain the best reward of life by the simple aesthetic experience. 2. Pursuing the reality of art through the discovery of natural vision, the satisfaction of society participation and super conscious. 3. Increasing the contribution of art to society by adding the values of humanity and multiple cultures. In Chapter Three, the researcher explained why he used the body parts as the main features of his works, how he applied the mixed media, digital photography, and how to manipulate the space and rhythmic concept to his creation. Chapter Four presented the content analysis and interpretation of the artistic works. The researcher elected nine representatives among four series, and exploreddeeply in terms of the themes and connotation of the works. In the last chapter, the researcher reached the conclusion after completing his works. He has learned how to expand the capacity and the understanding of art, howto apprehend the value of life, and how to pursue the concrete performance. Due to the introspection and overcoming with the technology impact, the author provides a potential solution to the crisis of contemporary art. Furthermore, he expects to reach the ideals of art by endless artistic production and to fulfill his own life.
D'Almeida, Juliette. "On the transformation of a semi-formal software description to a VDM specification." Thesis, 1992. http://spectrum.library.concordia.ca/3827/1/MM84648.pdf.
Full textKnörig, Rüdiger [Verfasser]. "Multiple Description Coding mittels kaskadierter korrelierender Transformationen / vorgelegt von Rüdiger Knörig." 2010. http://d-nb.info/100782963X/34.
Full textChen, Lei. "Computer-assisted transformation of design documents from a natural language description to structured modeling languages." Thesis, 2008. http://spectrum.library.concordia.ca/975904/1/MR45333.pdf.
Full textChaithram, Reshmika. "A systems psychodynamic description of gender role experiences and gender transformation in a government organisation." Diss., 2019. http://hdl.handle.net/10500/26543.
Full textM. Com. (Industrial and Organisational Psychology)
Fang, Fong-Juan, and 方鳳娟. "Junior High School Students’ Learning Outcomes on Multiplicative Identities: With Transformation from Geometrical Representation to Algebraic Description." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/81165450594592108451.
Full text國立彰化師範大學
科學教育研究所
90
ABSTRACT The main purpose of this study was to explore the instructional outcomes when teaching multiplicative identities to junior high school students, using materials separately developed by the Ministry of Education and by teachers participated in this study. Both materials involved transformation from geometrical representation to algebraic description. Geometrical representation involving the sides, the areas and other relevant conditions of a rectangle were introduced all at once in the former, while they were introduced step-by-step in the latter. This study was designed as a quasi-experiment. Researcher invited two mathematics teachers from a junior high school to cooperate. Two classes of seventh graders were chosen, one from each teacher. Students from each of the two classes were divided into two groups and then recombined to form an experimental group and a control group, each with 36 students, half of them coming from each class. Three tests and an open-questionnaire were used to acquire quantitative data. Records of observations of the class, interviews with students and the two teachers, tapes, videos, group discussions, works presented by students to the class, were all considered. Researcher analyzed the processes, principles and theories behind the teachers-developed material, and compared them with those of the material developed by the Ministry of Education. The data collected were analyzed. Using geometrical representation stepwise was found to motivate most students to learn mathematics actively, and to help them understand the distributive law of multiplicative identity. Most students showed much progress with test problems, remembered information for longer, experienced greater success, and enjoyed participating in the group discussions, which tended to help them move from geometrical to algebraic representation. Therefore, material designed by teachers should be organized according to the experiences of students, to enable the students to obtain knowledge by active discovery.
Braatz, Benjamin [Verfasser]. "Formal modelling and application of graph transformations in the resource description framework / vorgelegt von Benjamin Braatz." 2009. http://d-nb.info/1000110508/34.
Full textMikolajczyk, Krystian. "Detection of local features invariant to affines transformations." Phd thesis, 2002. http://tel.archives-ouvertes.fr/tel-00584096.
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