Dissertations / Theses on the topic 'Object dimension'
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Auffray, Fabienne. "La dimension cachée de l'objet 1913-2013." Thesis, Université Côte d'Azur (ComUE), 2016. http://www.theses.fr/2016AZUR2042/document.
Full textThe mundane and manufactured object has taken an increasing place on the artistic scene since its irruption, by the act of Marcel Duchamp in 1913. From 1913 to nowadays, this object is problematic: 1/ because it is both an everyday thing and a piece of art; 2/ because, when it is exhibited, it is submitted to a device of communication which simultaneously reveals and creates the meaning; 3/ because more the object is reducing itself, more the discourse about it is important.Throughout this century, the meaning of the object has changed and an evolution is discernable: more the object is abstracting or digitizing itself, more it exists by the discourse and the communication. This gives us to see an irreducible thing, a fundamentally human leftover.Analysed by aesthetic, anthropologic and institutional perspectives, the object, apparently simple, reveals its clear complexity. It is functional, useful, sometimes decorative, and more rarely a piece of art; and something of the subject, who uses, peers, creates its, sets in itself. The object, as a paradigm of the human communication, follows, induces, endorses at any rate progresses and regressions of society. In increasingly significant, interactive and sophisticated exhibitions’ devices, the piece of art is an essential indicator for a best understanding of the present time
Lu, Weizhi. "Contribution to dimension reduction techniques : application to object tracking." Thesis, Rennes, INSA, 2014. http://www.theses.fr/2014ISAR0010/document.
Full textThis thesis studies three popular dimension reduction techniques: compressed sensing, random projection and sparse representation, and brings significant improvements on these techniques. In compressed sensing, the construction of sensing matrix with both good performance and hardware-Friendly structure has been a significant challenge. In this thesis, we explicitly propose the optimal zero-One binary matrix by searching the best Restricted Isometry Property. In practice, an efficient greedy algorithm is successively developed to construct the optimal binary matrix with arbitrary size. Moreover, we also study another interesting problem for compressed sensing, that is the performance of sensing matrices with high compression rates. For the first time, the performance floor of random Bernoulli matrices over increasing compression rates is observed and effectively estimated. Random projection is mainly used in the task of classification, for which the construction of random projection matrix is also critical in terms of both performance and complexity. This thesis presents so far the most sparse random projection matrix, which is proved holding better feature selection performance than other more dense random matrices. The theoretical result is confirmed with extensive experiments. As a novel technique for feature or sample selection, sparse representation has recently been widely applied in the area of image processing. In this thesis, we mainly focus our attention on its applications to visual object tracking. To reduce the computation load related to sparse representation, a simple but efficient scheme is proposed for the tracking of single object. Subsequently, the potential of sparse representation to multiobject tracking is investigated
Self, Jessica Zeitz. "Designing and Evaluating Object-Level Interaction to Support Human-Model Communication in Data Analysis." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/70950.
Full textPh. D.
Zhao, Die. "Graphics Editor." Thesis, Växjö University, School of Mathematics and Systems Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-1195.
Full textThe human enters into the information age in 21st century; the computer science and technology are developed at full speed, and already infiltrate into various field extensively. Resultantly manual drawing gradually is phased out, for those designers who have no prior experience in the computer operation are concerned, they need to have a kind of two-dimensional graphical tool. Graphics editor system arose to the request for designing planar figures for people who have little knowledge in computer.
This paper describes the development process of this system what is studied for the foundation, utilize object-oriented method to analyze, design with computer figure, and adopt Visual C ++ 6.0 as the developing platform. All these have been finished after 1 month or so. It designs to be two-dimensional graphical software with diverse function which operates simply, easy to study, mutual interface friendly graphics editor system and has satisfied some figure users at present with the new demand as well.
The following main functions have been realized in this application: It can draw various figures, such as dot, line, circle, arc, parabola and curve, modify them and comprehensive editing. Figure editor includes translation, mirroring, rotating and some similar operations. Comprehensive drawing includes drawing polygon (sealed and arbitrary polygon), round tangent line, round circle contact, line circle contact, some circle contacts and so forth. Meanwhile obtain the point of intersect between the arbitrary crossing, and draw different figures basically according to the points of intersect. By the way, it is capable to cancel and redraw the editing.
Skiba, Nathalie. "Processus d'innovation centré sur l'utilisateur : identification des besoins et interprétation des données issues de l'integration de l'utilisateur dans le processus de co-conception." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0027/document.
Full textOur way of life and the products that surround us have never evolved so quickly. This evolution is a new factor to take into account in the product development to ensure the product appropriation by the users. For that reason the design approaches try to integrate usages. The Living Lab approach is organised around four principles: the realism of the studied situation; the continuity in the collaboration with the users; the collection of spontaneous usage data; the empowerment of users in the design process. These principles facilitate the path from "user-centred design" to "usage-centred design" but are difficult to realise practically. To guide and inspire the designers we propose a Living Lab project method made of eighteen operations; each operation is supposed to reach one of the four principles. The proposed method is represented with NIAM-ORM diagrams which are easily understandable because of its similarity with natural language. We tested our method on two urban projects and two industrial projects. The relevance of the tested operations on the principle realisation is evaluated according to bayesian networks: depending on the results the operations are validated, adjusted or rephrased and implemented again in the NIAM-ORM model
Lavoie, Matt J. "Three dimensional object recognition." Honors in the Major Thesis, University of Central Florida, 1991. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/3.
Full textBachelors
Arts and Sciences
Computer Sciences
Fox, Timothy Stephen. "A three dimensional object rendering system." Virtual Press, 1991. http://liblink.bsu.edu/uhtbin/catkey/834152.
Full textDepartment of Computer Science
Jean, Marie. "L'angoisse dans la clinique : de Freud à Lacan, la dimension structurelle et la place de l'angoisse." Phd thesis, Université Toulouse le Mirail - Toulouse II, 2011. http://tel.archives-ouvertes.fr/tel-00649751.
Full textLopez-Bonilla, Roman Ernesto. "Object recognition in three-dimensions for robotic applications." Thesis, University of Bradford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305752.
Full textRosso, Maximiliano. "Do risco e do seu enfrentamento mediante intervenções territoriais amparadas no direito." Pontifícia Universidade Católica de São Paulo, 2014. https://tede2.pucsp.br/handle/handle/6382.
Full textThe present study aims to debate about risk from a spatial perspective. Risk understood as a present representation of concrete dangers and of future situations which are apt to cause harm to rights in general. Modernity brings with it the production of risks, which can be aggravated through interventions on the urban fabric. In the present paper we shall argue, with the help of legal texts from different countries, as well as of practical examples, that risks can also be managed by means of those same spatial interventions, imposing a new mode of State intervention
O presente trabalho tem por objeto o tema do risco em uma dimensão que denominamos de espacial. Mencionado risco consiste, em apertada síntese, numa representação de perigos e de situações futuras aptas a causar danos a direitos dos mais diversos. Risco que se imbrica de forma indissociável à sociedade moderna e que pode ser amplificado por intervenções no tecido urbano. Valendo-nos da análise de diferentes diplomas legislativos, de ordenamentos diversos, assim como de exemplo práticos, argumentaremos quanto às possibilidades de enfrentamento desse risco por meio de intervenções igualmente espaciais, o risco impondo, nesses termos, um novo intervencionismo estatal
Tarr, Michael J. (Michael Jay). "Orientation dependence in three-dimensional object recognition." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/13994.
Full textChalfant, Julie Steele. "Three-dimensional object registration using wavelet features." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/43147.
Full textIncludes bibliographical references (p. 97-109).
Recent developments in shape-based modeling and data acquisition have brought three-dimensional models to the forefront of computer graphics and visualization research. New data acquisition methods are producing large numbers of models in a variety of fields. Three-dimensional shape-based matching and registration (alignment) are key to the useful application of such models in areas from automated surface inspection to cancer detection and surgery. The three-dimensional models in these applications are typically huge. State-of-the-art simulations in computational fluid dynamics produce upward of four terabytes of data per second of flow. Research-level magnetic resonance imaging (MRI) resolutions can reach 1 cubic micro-meter. As a result, object registration and matching algorithms must handle very large amounts of data. The algorithms developed in this thesis accomplish automatic registration and matching of three-dimensional voxelized models. We employ features in a wavelet transform domain to accomplish registration. The features are extracted in a multiresolutional format, thus delineating features at various scales for robust and rapid matching. Registration is achieved through seeking peaks in sets of rotation quaternions using a voting scheme, then separately identifying translation. The method is robust to occlusion, clutter and noise. The efficacy of the algorithm is demonstrated through examples from solid modeling and medical imaging applications.
by Julie S. Chalfant.
Ph.D.
Green, Thomas Joseph. "Three-dimensional object recognition using laser radar." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/13073.
Full textIncludes bibliographical references (leaves 217-220).
by Thomas Joseph Green, Jr.
Ph.D.
LI, XIAOKUN. "THREE-DIMENSIONAL OBJECT RECONSTRUCTION FROM RANGE IMAGES." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1100483081.
Full textWikander, Gustav. "Three dimensional object recognition for robot conveyor picking." Thesis, Linköping University, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18373.
Full textShape-based matching (SBM) is a method for matching objects in greyscale images. It extracts edges from search images and matches them to a model using a similarity measure. In this thesis we extend SBM to find the tilt and height position of the object in addition to the z-plane rotation and x-y-position. The search is conducted using a scale pyramid to improve the search speed. A 3D matching can be done for small tilt angles by using SBM on height data and extending it with additional steps to calculate the tilt of the object. The full pose is useful for picking objects with an industrial robot.
The tilt of the object is calculated using a RANSAC plane estimator. After the 2D search the differences in height between all corresponding points of the model and the live image are calculated. By estimating a plane to this difference the tilt of the object can be calculated. Using the tilt the model edges are tilted in order to improve the matching at the next scale level.
The problems that arise with occlusion and missing data have been studied. Missing data and erroneous data have been thresholded manually after conducting tests where automatic filling of missing data did not noticeably improve the matching. The automatic filling could introduce new false edges and remove true ones, thus lowering the score.
Experiments have been conducted where objects have been placed at increasing tilt angles. The results show that the matching algorithm is object dependent and correct matches are almost always found for tilt angles less than 10 degrees. This is very similar to the original 2D SBM because the model edges does not change much for such small angels. For tilt angles up to about 25 degrees most objects can be matched and for nice objects correct matches can be done at large tilt angles of up to 40 degrees.
Fasogbon, Peter Oluwanisola. "Dimensional measurement of metallic object by 3D vision." Thesis, Lille 1, 2016. http://www.theses.fr/2016LIL10105.
Full textIn this PhD thesis, we have demonstrated through various studies and experiments the necessity of using 3D vision system to measure the cross-section area of metallic objects. The current methods are based on 2D vision approach, which do not allow the measurement of different geometry of these metallic objects. Therefore, we have proposed 3D vision system that consists of lasers and cameras that have been equipped with Scheimpflug optical devices. This non-conventional optical set-up increases the field of view of the camera. As we have to measure the metallic object using the laser-Scheimpflug device, we need to calibrate the system. We proposed a new calibration method that provides significant improvement compared to the state of art laser-camera triangulation system. Using the calibrated system, the cross-section of the metallic object is determined by the analysis of the profile that results from the laser line projected on the metallic object. We have validated the system capability on plug gauges
Ko, Kwang Hee 1971. "Algorithms for three-dimensional free-form object matching." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29751.
Full textIncludes bibliographical references (leaves 117-126).
This thesis addresses problems of free-form object matching for the point vs. NURBS surface and the NURBS surface vs. NURBS surface cases, and its application to copyright protection. Two new methods are developed to solve a global and partial matching problem with no a priori information on correspondence or initial transformation and no scaling effects, namely the KH and the umbilic method. The KH method establishes a correspondence between two objects by utilizing the Gaussian and mean curvatures. The umbilic method uses the qualitative properties of umbilical points to find correspondence information between two objects. These two methods are extended to deal with uniform scaling effects. The umbilic method is enhanced with an algorithm for scaling factor estimation using the quantitative properties of umbilical points. The KH method is used as a building block of an optimization scheme based on the golden section search which recovers iteratively an optimum scaling factor. Since the golden section search only requires an initial interval for the scaling factor, the solution process is simplified compared to iterative optimization algorithms, which require good initial estimates of the scaling factor and the rigid body transformation. The matching algorithms are applied to problems of copyright protection.
(cont.) A suspect model is aligned to an original model through matching methods so that similarity between two geometric models can be assessed to determine if the suspect model contains part(s) of the original model. Three types of tests, the weak, intermediate and strong tests, are proposed for similarity assessment between two objects. The weak and intermediate tests are performed at node points obtained through shape intrinsic wireframing. The strong test relies on isolated umbilical points which can be used as fingerprints of an object for supporting an ownership claim to the original model. The three tests are organized in two decision algorithms so that they produce systematic and statistical measures for a similarity decision between two objects in a hierarchical manner. Based on the systematic statistical evaluation of similarity, a decision can be reached whether the suspect model is a copy of the original model.
by Kwang Hee Ko.
Ph.D.
Lee, Sungkoo. "A constraint-based 2-dimensional object display system." Case Western Reserve University School of Graduate Studies / OhioLINK, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=case1055342896.
Full textLavoie, Philippe. "Three-dimensional object reconstruction using structured light and two two-dimensional images." Thesis, University of Ottawa (Canada), 1996. http://hdl.handle.net/10393/10255.
Full textBassi, Mohamed. "Quantification d'incertitudes et objets en dimension infinie." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMIR03.
Full textThe Polynomial Chaos theory, being a less expensive and more efficient alternative of the Monte Carlo Simulation, remains limited to the polynomials of Gaussian variables. We present a Hilbertian method that generalizes this theory and we establish the conditions of existence and convergence of an expansion in Generalized Fourier Series. Then, we present the Statistics of Things that allows studying the statistical characteristics of a set of random infinite-dimensional objects. By computing the distances between the hypervolumes, namely the distance of Hausdorff, this method allows determining the median object, the quantile objects and a confidence interval at a given level for a finite set of random objects. In the third section, we address a method for simulating a large size sample of a random object at a much reduced computational cost, and calculating its mean without using the distance between the hypervolumes
Chagas, Luciana Beatriz. "De cidadela a vila: cerâmica, arquitetura e imaginário." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/27/27159/tde-29062015-122837/.
Full textThis work analyses the ceramic object inspired by architecture. From artistic, theoretical and iconographic references, a poetic thread was traced throughout four years, resulting in several segments, or series. The written work presents reflections on the link between the medieval citadels and the emotional relationship with the living spaces, as well as a description of the processes and techniques used for modeling and firing the ceramic pieces.
Jaitly, Rahul. "Building and updating a library of three-dimensional objects." Thesis, King's College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265701.
Full textJohansson, Lena. "Personligheter hos mjölkkor." Thesis, Linköping University, Linköping University, Department of Physics, Chemistry and Biology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-57914.
Full textBrisson, Erik. "Representation of d-dimensional geometric objects /." Thesis, Connect to this title online; UW restricted, 1990. http://hdl.handle.net/1773/6903.
Full textGurram, Prudhvi K. "Automated 3D object modeling from aerial video imagery /." Online version of thesis, 2009. http://hdl.handle.net/1850/11207.
Full textTolman, J. D. "Three-dimensional object recognition using vector encoded scene data." Thesis, University of Bradford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233692.
Full textMatera, Tomáš. "Visipedia - Multi-dimensional Object Embedding Based on Perceptual Similarity." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2014. http://www.nusl.cz/ntk/nusl-236115.
Full textGill, Gurman. "Building a model for a 3D object classs in a low dimensional space for object detection." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40739.
Full textLa modélisation de classes d'objets 3D nécessite la prise en compte des variations à l'intérieur d'une même classe de l'apparence d'un objet sous différents points de vue, échelles et conditions d'illumination. Par conséquent, la détection de tels objets en présence d'un arrière-plan complexe est difficile. Cette thèse présente une approche nouvelle pour la modélisation générique de classes d'objets 3D, ainsi qu’un algorithme pouvant détecter plusieurs objets d'une classe dans une image.Motivé par la représentation par parties, l'approche proposée divise l'objet en différentes régions spatiales. Chaque région est associée à la partie d'un objet dont l'apparence est représentée par un ensemble dense de caractéristiques SIFT superposées. La distribution de ces caractéristiques est alors projetée dans un espace dimensionnel inférieur à l'aide d'un algorithme supervisé de Locally Linear Embedding. Chaque partie de l'objet est essentiellement représentée par un regroupement spatial dans l'espace englobant. Pour l'invariance de point de vue, la sphère contenant l'objet 3D est divisée en un nombre discret de segments. Plusieurs regroupements spatiaux représentent l'objet dans chaque segment. Cette thèse propose une manière de représenter ces regroupements aussi bien dans des espaces englobants uniques que multiples. Un aspect innovateur de l'approche proposée est que toutes les parties d'objets et les éléments d'arrière-plan sont représentés dans le même espace dimensionnel inférieur. Ainsi, l'algorithme de détection peut explicitement étiqueter des éléments d'une image comme appartenant à une partie d'objet ou à l'arrière-plan. De plus, les relations spatiales entre les parties d'un objet sont déterminées pendant l'étape de détection et employées pour localiser des éléments d'une classe d'objet dans une nouvelle image. Il est démontré que la détection d'objets basée sur la mesure de la consistanc
ATAPHOL, SUJIRAPINYOKUL. "Texniture, a freestanding functional textile object." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-20310.
Full textProgram: Konstnärligt masterprogram i mode- och textildesign
Zhang, Jian, and 张简. "Image point matching in multiple-view object reconstruction from imagesequences." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B48079856.
Full textpublished_or_final_version
Electrical and Electronic Engineering
Doctoral
Doctor of Philosophy
Goltsman, Alexander Mark. "Three Dimensional Interferometric Imaging at Terahertz Frequency for Concealed Object Detection." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/36351.
Full textMaster of Science
Eren, Gönen. "3D scanning of transparent objects." Phd thesis, Université de Bourgogne, 2010. http://tel.archives-ouvertes.fr/tel-00584061.
Full textDickinson, John Kenneth. "Packing subsets of arbitrary three-dimensional objects." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0012/NQ42508.pdf.
Full textLundkvist, Christian. "Moduli spaces of zero-dimensional geometric objects." Doctoral thesis, Stockholm : Matematik, Kungliga Tekniska högskolan, 2009. http://www.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:223079.
Full textCosmas, John Paul. "The generation of 3-dimensional object representations from range images." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47007.
Full textSchockaert, Cédric. "Three dimensional object analysis and tracking by digital holography microscopy." Doctoral thesis, Universite Libre de Bruxelles, 2007. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210718.
Full textThis thesis aims to develop general and robust algorithms that are devoted to automate the analysis process in the 3D space and in time of objects present in a volume studied by a specific imaging system that permits to record holograms. Indeed, the manual processing of a huge amount of holograms is not realistic and has to be automated by software implementing precise algorithms. In this thesis, the imaging system that records holograms is a Mach-Zehnder interferometer working in transmission and studied objects are either of biological nature (crystals, vesicles, cancer cells) or latex particles. We propose and test focus criteria, based on an identical focus metric, for both amplitude and phase objects. These criteria allow the determination of the best focus plane of an object when the numerical investigation is performed. The precision of the best focus plane is lower than the depth of field of the microscope. From this refocus theory, we develop object detection algorithms that build a synthetic image where objects are bright on a dark background. This detection map of objects is the first step to a fully automatic analysis of objects present in one hologram. The combination of the detection algorithm and the focus criteria allow the precise measurement of the 3D position of the objects, and of other relevant characteristics like the object surface in its focus plane, or its convexity or whatever. These extra relevant measures are carried out with a segmentation algorithm adapted to the studied objects of this thesis (opaque objects, and transparent objects in a uniform refractive index environment). The last algorithm investigated in this research work is the data association in time of objects from hologram to hologram in order to extract 3D trajectories by using the predictive Kalman filtering theory.
These algorithms are the abstract bricks of two software: DHM Object Detection and Analysis software, and Kalman Tracking software. The first software is designed for both opaque and transparent objects. The term object is not defined by one other characteristic in this work, and as a consequence, the developed algorithms are very general and can be applied on various objects studied in transmission by DHM. The tracking software is adapted to the dynamic applications of the thesis, which are flows of objects. Performance and results are exposed in a specific chapter.
Doctorat en sciences appliquées
info:eu-repo/semantics/nonPublished
Wong, Yick Kei. "An object-oriented approach to dimensional analysis for engineering design." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0017/MQ55033.pdf.
Full textWong, Yick Kei 1973. "An object-oriented approach to dimensional analysis for engineering design /." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29869.
Full text鄭則平 and Chuk-ping Cheng. "Noodle: a three-dimensional net-based object-oriented development environment." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B31211276.
Full textCaparrelli, Fabio. "View-based three-dimensional object recognition using pairwise geometric histograms." Thesis, University of Sheffield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322876.
Full textAZEVEDO, ROBERTO GERSON DE ALBUQUERQUE. "SUPPORTING THREE-DIMENSIONAL MEDIA OBJECT CONTROL AND PRESENTATION IN NCL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2010. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=16864@1.
Full textO mundo em que vivemos é formado por um espaço fisicamente tridimensional e é natural que o ser humano busque representá-lo da forma mais fiel possível, também em ambientes virtuais. Na Web, por exemplo, já existem vários esforços na busca do suporte a criação de aplicações 3D interativas de forma declarativa, grande parte deles são baseados nos conceitos de grafos de cena e grafos de rotas. Grafos de cena têm se tornado um padrão de modelagem espacial de aplicações tridimensionais por meio de uma abordagem hierárquica e declarativa. Por sua vez, o comportamento do grafo de cena usualmente tem sido especificado por meio de grafos de rotas ou linguagens imperativas. No que se refere à TV Digital Interativa (TVDi), por outro lado, ainda há muito a ser feito. Nested Context Language (NCL) é a linguagem declarativa padrão para o sistema de TV Digital Terrestre ISDB-TB e Recomendação ITU-T para serviços IPTV, que permite a autoria de documentos hipermídia por meio de uma abordagem simples e expressiva. Embora NCL não restrinja qualquer tipo de objeto de mídia, na sua versão atual (3.0), ela trata apenas objetos de mídia bidimensionais, relacionando-os temporal e espacialmente. Dada a importância de NCL no cenário de TVDi, esta pesquisa objetiva discutir como tal linguagem pode também controlar objetos tridimensionais, permitindo a criação de aplicações 3D para TVDi. Como caso especial, este trabalho discute como NCL pode controlar o comportamento de objetos 3D compostos representados por grafos de cenas, discutindo suas vantagens e desvantagens em relação ao uso de grafos de rotas. Visando testar a proposta deste trabalho, foi adicionado um exibidor de mídia X3D (linguagem baseada em grafo de cena) à implementação de referência do Ginga-NCL, responsável por executar aplicações NCL. Adicionalmente, também é proposta a extensão dos eventos tratados por NCL, para refletir eventos específicos de ambientes 3D, e a incorporação de regiões, baseadas em objetos geométricos 3D, à NCL, com o objetivo de possibilitar a apresentação de objetos de mídia 2D sobre a superfície de objetos 3D.
The world where we live in is physically formed by a three-dimensional space and it is natural human being wants to represent it as faithful as possible. In Web for example there are a lot of efforts in order to support the creation of interactive 3D applications, most of them based on scene graphs and route graphs. Scene graphs have become a standard for modeling spatial 3D applications from a hierarchical and declarative approach. In order to represent the scene graphs behavior, route graphs or imperative languages are more commonly used. As regards Interactive Digital Television (iDTV), on the other hand, there is still a lot of work to be done. Nested Context Language (NCL) is the standard declarative language for Terrestrial Digital Television Systems (ISDB-T) and IPTV (ITU-T), which allows the hypermedia document authoring through a simple and expressiveness approach. Even though NCL does not restrict any type of media object, in its current version (3.0), NCL treats only two-dimensional objects, relating them temporally and spatially. Given the importance of NCL in the iDTV scenario, this research aims discuss how it can also control three-dimensional objects. As a special case, this work discusses how NCL can control composite object behavior represented by scene graphs, discussing its advantages and disadvantages. In order to test what was proposed, an X3D (which is an ISO standard language based on scene graphs) player was incorporated to the Ginga-NCL reference implementation, which is responsible to play NCL applications. Additionally, it is also proposed a new set of NCL events, in order to reflect three-dimensional events, and the incorporation of NCL regions based on three-dimensional geometric, so that the presentation of two-dimensional media objects over 3D object’s surfaces is possible.
Villalobos, Leda. "Three dimensional primitive CAD-based object recognition from range images." Case Western Reserve University School of Graduate Studies / OhioLINK, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=case1057759966.
Full textCheng, Chuk-ping. "Noodle : a three-dimensional net-based object-oriented development environment /." [Hong Kong : University of Hong Kong], 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13867659.
Full textJackway, Paul Thomas. "Morphological scale-space with application to three-dimensional object recognition." Thesis, Queensland University of Technology, 1994.
Find full textWang, Yu. "Efficient modeling methods for freeform objects /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?MECH%202006%20WANG.
Full textEvnin, Oleg Schwarz John H. "On quantum interacting embedded geometrical objects of various dimensions /." Diss., Pasadena, Calif. : Caltech, 2006. http://resolver.caltech.edu/CaltechETD:etd-06072006-174745.
Full textFraser, Mike C. "Working with objects in collaborative virtual environments." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364659.
Full textWang, Changling. "Sketch based 3D freeform object modeling with non-manifold data structure /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?MECH%202002%20WANGC.
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Borges, Dibio Leandro. "Recognising three-dimensional objects using parameterized volumetric models." Thesis, University of Edinburgh, 1996. http://hdl.handle.net/1842/751.
Full textHughes, H. W. "Recognition of three dimensional objects using deformable models." Thesis, University of Edinburgh, 1992. http://hdl.handle.net/1842/19857.
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