Download or read book Suivi du mouvement d objets articul s dans des s quences d images vid o written by Quentin Delamarre and published by . This book was released on 2003 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nous proposons une méthode pour faire "comprendre" automatiquement à un ordinateur les mouvements d'un être humain filmé par des caméras vidéo, sachant qu'aucun marqueur n'a été placé sur celui-ci. Pour cela, nous avons choisi de nous intéresser à une première étape: l'estimation des variations des paramètres du mouvement d'une personne dans le temps. Nous abordons aussi la deuxième étape qui consiste à interpréter ces variations pour leur donner un sens. Des informations sont extraites des images vidéo et sont comparées à un modèle géométrique de l'objet suivi. Ces informations sont soit une segmentation de la silhouette de l'objet dans le cas où les caméras sont éloignées les unes des autres, soit une reconstruction tridimensionnelle de cet objet dans le cas où les caméras sont rapprochées. Nous expliquons pourquoi cette distinction est faite. Dans chacun des cas nous supposons connue la géométrie de l'objet en construisant un modèle 3D constitué de parties rigides simples articulées entre elles. La minimisation de l'erreur d'estimation des paramètres de position est effectuée en créant des forces et en résolvant les équations de la dynamique pour le modèle 3D articulé. Ces forces sont créées à partir des informations trouvées dans les images. Les différentes étapes de l'algorithme sont abordées: la calibration des caméras, la structure du modèle 3D, l'extraction d'informations des images, l'application de forces au modèle 3D, la dynamique de ce modèle et l'estimation et la prédiction de son mouvement dans la scène grâce à un filtre de Kalman. Enfin nous montrons des résultats encourageants et proposons des idées pour généraliser l'algorithme.

Download or read book Vid o 3D Capture traitement et diffusion written by LUCAS Laurent and published by Lavoisier. This book was released on 2013-10-01 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les médias 3D relief, leur capture, leur retransmission en relief, possiblement en direct, sont aujourd’hui disponibles et portent l’évolution attendue pour la télévision et l’Internet. Ces technologies (« télévision 3D », « free viewpoint TV » ou « Vidéo 3D »), impactent toute la chaîne audiovisuelle : · les techniques d'acquisition relief sont plus variées · les scènes sont représentées par des structures numériques plus ou moins informatives : vidéos multi-vues sans/avec profondeur, modèles 3D · la reconstruction extrait lesdites représentations des vidéos multi-vues, · leur compression facilite la diffusion des médias, · l'affichage (auto-)stéréoscopique, avec/sans adaptation/enrichissement et/ou synthèse de vues intermédiaires, permet l’expérience visuelle immersive ciblée. La vidéo 3D recouvre donc de multiples facettes. Visant à donner aux étudiants une vision d’ensemble du sujet et aux chercheurs un texte de référence actuel aussi complet que possible, cet ouvrage en présente les principaux développements relevant de domaines variés : mathématiques appliquées, vision par ordinateur, informatique graphique, réalité virtuelle, psychophysique et physiologie de la vision humaine...

Download or read book Suivi automatique d objets 3D bas sur l apparence dans des s quences d images written by Florent Duculty and published by . This book was released on 2003 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail de thèse s'inscrit dans le domaine de la vision artificielle. Plus précisément, nous nous sommes intéressés au suivi temps réel vidéo d'objets 3D mobiles dans des séquences d'images. A l'origine de ces travaux, se trouve un algorithme, développé au LASMEA, dédié au suivi de motifs planaires texturés. Nous nous sommes proposés d'adapter cette méthode de suivi 2D à l'estimation du mouvement apparent d'objets 3D. Pour cela, l'objet 3D est modélisé à l'aide d'une collection d'images de référence. Pour chacune de ces vues, la solution 2D citée précédemment permet de suivre les mouvements fronto parallèles (déplacement de l'objet parallèlement au plan image) qui ne modifient pas de façon majeure l'aspect apparent de l'image. Le point délicat, solutionné dans le cadre de cette thèse, est la détection et la gestion du changement d'aspect du motif suivi dû à des rotations relatives (caméra/objet) en site et azimut. Sur le plan pratique, l'approche proposée a permis le développement d'un système expérimental de suivi de visage et la navigation automatique d'un bras robotique, muni d'une caméra embarquée, autour d'un objet 3D

Download or read book Analyse des mouvements non plans des objets vid o written by Mireya Saraí García-Vázquez and published by . This book was released on 2004 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'analyse d'estimation du mouvement apparent des objets vidéo revêt une importance capitale dans le domaine des applications liées à la vidéo numérique , telles quelles, le codage et la manipulation vidéo (cadre MPEG-4). Dans ce contexte, la principale méthode développée dans cette thèse permet une modélisation paramétrique des rotations non-plans (des rotation autours d'axes parallèles au plan image) dans le but d'améliorer la qualité des phases d'estimation du mouvement que ce soit pour des applications d'analyse d'images ou por une meilleure efficacité de la phase de compensation de mouvement dans une schéma de compression vidéo. Les résultats obtenus ont mis en évidence le fait que le modèle de rotations non-plans est intéressant à utiliser lorsque la séquence vidéo traitée contient de type de mouvement car il permet d'améliorer de manière significative la qualité de compensation du mouvement.

Download or read book Medical Image Computing and Computer Assisted Intervention MICCAI 2012 written by Nicholas Ayache and published by Springer. This book was released on 2012-08-28 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: The three-volume set LNCS 7510, 7511, and 7512 constitutes the refereed proceedings of the 15th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2012, held in Nice, France, in October 2012. Based on rigorous peer reviews, the program committee carefully selected 252 revised papers from 781 submissions for presentation in three volumes. The third volume includes 79 papers organized in topical sections on diffusion imaging: from acquisition to tractography; image acquisition, segmentation and recognition; image registration; neuroimage analysis; analysis of microscopic and optical images; image segmentation; diffusion weighted imaging; computer-aided diagnosis and planning; and microscopic image analysis.

Download or read book Reasoning in Physics written by L. Viennot and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: For a meaningful understanding of physics, it is necessary to realise that this corpus of knowledge operates in a register different from natural thought. This book aims at situating the main trends of common reasoning in physics with respect to some essential aspects of accepted theory. It analyses a great many research results based on studies of pupils and students at various academic levels, involving a range of physical situations. It shows the impressive generality of the trends of common thought, as well as their resistance to teaching. The book's main focus is to underline to what extent natural thought is organised. As a result of this mapping out of trends of reasoning, some suggestions for teaching are presented; these have already influenced recent curricula in France. This book is intended for teachers and teacher trainers principally, but students can also benefit from it to improve their understanding of physics and of their own ways of reasoning.

Download or read book Medical image computing and computer assisted intervention written by Nicholas Ayache and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Painted Love written by Hollis Clayson and published by Getty Publications. This book was released on 2003-10-30 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this engrossing book, Hollis Clayson provides the first description and analysis of French artistic interest in women prostitutes, examining how the subject was treated in the art of the 1870s and 1880s by such avant-garde painters as Cézanne, Degas, Manet, and Renoir, as well as by the academic and low-brow painters who were their contemporaries. Clayson not only illuminates the imagery of prostitution-with its contradictory connotations of disgust and fascination-but also tackles the issues and problems relevant to women and men in a patriarchal society. She discusses the conspicuous sexual commerce during this era and the resulting public panic about the deterioration of social life and civilized mores. She describes the system that evolved out of regulating prostitutes and the subsequent rise of clandestine prostitutes who escaped police regulation and who were condemned both for blurring social boundaries and for spreading sexual licentiousness among their moral and social superiors. Clayson argues that the subject of covert prostitution was especially attractive to vanguard painters because it exemplified the commercialization and the ambiguity of modern life.

Download or read book The View from the Road written by Donald Appleyard and published by . This book was released on 1966 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Why We Play written by Roberte Hamayon and published by Hau. This book was released on 2016 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Play is one of humanity's straightforward yet deceitful ideas: though the notion is unanimously agreed upon to be universal, used for man and animal alike, nothing defines what all its manifestations share, from childish playtime to on stage drama, from sporting events to market speculation. Within the author's anthropological field of work (Mongolia and Siberia), playing holds a core position: national holidays are called "Games," echoing in that way the circus games in Ancient Rome and today's Olympics. These games convey ethical values and local identity. Roberte Hamayon bases her analysis of the playing spectrum on their scrutiny. Starting from fighting and dancing, encompassing learning, interaction, emotion and strategy, this study heads towards luck and belief as well as the ambiguity of the relation to fiction and reality. It closes by indicating two features of play: its margin and its metaphorical structure. Ultimately revealing its consistency and coherence, the author displays play as a modality of action of its own. "Playing is no 'doing' in the ordinary sense" once wrote Johan Huizinga. Isn't playing doing something else, elswhere and otherwise ?

Download or read book Three dimensional Computer Vision written by Olivier Faugeras and published by MIT Press. This book was released on 1993 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph by one of the world's leading vision researchers provides a thorough, mathematically rigorous exposition of a broad and vital area in computer vision: the problems and techniques related to three-dimensional (stereo) vision and motion. The emphasis is on using geometry to solve problems in stereo and motion, with examples from navigation and object recognition. Faugeras takes up such important problems in computer vision as projective geometry, camera calibration, edge detection, stereo vision (with many examples on real images), different kinds of representations and transformations (especially 3-D rotations), uncertainty and methods of addressing it, and object representation and recognition. His theoretical account is illustrated with the results of actual working programs.Three-Dimensional Computer Vision proposes solutions to problems arising from a specific robotics scenario in which a system must perceive and act. Moving about an unknown environment, the system has to avoid static and mobile obstacles, build models of objects and places in order to be able to recognize and locate them, and characterize its own motion and that of moving objects, by providing descriptions of the corresponding three-dimensional motions. The ideas generated, however, can be used indifferent settings, resulting in a general book on computer vision that reveals the fascinating relationship of three-dimensional geometry and the imaging process.

Download or read book Watching YouTube written by Michael Strangelove and published by University of Toronto Press. This book was released on 2010-01-01 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Michael Strangelove provides a broad overview of the world of amateur online videos and the people who make them. He describes how online digital video is both similar to and different from traditional home-movie-making and argues that we are moving into a post-television era characterized by mass participation. --from publisher description.

Download or read book Language and Learning in the Digital Age written by James Paul Gee and published by Routledge. This book was released on 2011-02-01 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Language and Learning in the Digital Age, linguist James Paul Gee and educator Elisabeth Hayes deal with the forces unleashed by today’s digital media, forces that are transforming language and learning for good and ill. They argue that the role of oral language is almost always entirely misunderstood in debates about digital media. Like the earlier inventions of writing and print, digital media actually power up or enhance the powers of oral language. Gee and Hayes deal, as well, with current digital transformations of language and literacy in the context of a growing crisis in traditional schooling in developed countries. With the advent of new forms of digital media, children are increasingly drawn towards video games, social media, and alternative ways of learning. Gee and Hayes explore the way in which these alternative methods of learning can be a force for a paradigm change in schooling. This is an engaging, accessible read both for undergraduate and graduate students and for scholars in language, linguistics, education, media and communication studies.

Download or read book Elements of Structural Syntax written by Lucien Tesnière and published by John Benjamins Publishing Company. This book was released on 2015-02-11 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume appears now finally in English, sixty years after the death of its author, Lucien Tesnière. It has been translated from the French original into German, Spanish, Italian, and Russian, and now at long last into English as well. The volume contains a comprehensive approach to the syntax of natural languages, an approach that is foundational for an entire stream in the modern study of syntax and grammar. This stream is known today as dependency grammar (DG). Drawing examples from dozens of languages, many of which he was proficient in, Tesnière presents insightful analyses of numerous phenomena of syntax. Among the highlights are the concepts of valency and head-initial vs. head-final languages. These concepts are now taken for granted by most modern theories of syntax, even by phrase structure grammars, which represent, in a sense, the opposite sort of approach to syntax from what Tesnière was advocating. Now Open Access as part of the Knowledge Unlatched 2017 Backlist Collection.

Download or read book Gesture Based Communication in Human Computer Interaction written by Antonio Camurri and published by Springer. This book was released on 2011-04-02 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on the multifaceted aspects of modeling, analysis, and synthesis of - man gesture is receiving growing interest from both the academic and industrial communities. On one hand, recent scienti?c developments on cognition, on - fect/emotion, on multimodal interfaces, and on multimedia have opened new perspectives on the integration of more sophisticated models of gesture in c- putersystems.Ontheotherhand,theconsolidationofnewtechnologiesenabling “disappearing” computers and (multimodal) interfaces to be integrated into the natural environments of users are making it realistic to consider tackling the complex meaning and subtleties of human gesture in multimedia systems, - abling a deeper, user-centered, enhanced physical participation and experience in the human-machine interaction process. The research programs supported by the European Commission and s- eral national institutions and governments individuated in recent years strategic ?elds strictly concerned with gesture research. For example, the DG Infor- tion Society of the European Commission (www.cordis.lu/ist) supports several initiatives, such as the “Disappearing Computer” and “Presence” EU-IST FET (Future and Emerging Technologies), the IST program “Interfaces & Enhanced Audio-Visual Services” (see for example the project MEGA, Multisensory - pressive Gesture Applications, www.megaproject.org), and the IST strategic - jective “Multimodal Interfaces.” Several EC projects and other funded research are represented in the chapters of this book. Awiderangeofapplicationscanbene?tfromadvancesinresearchongesture, from consolidated areas such as surveillance to new or emerging ?elds such as therapy and rehabilitation, home consumer goods, entertainment, and aud- visual, cultural and artistic applications, just to mention only a few of them.

Download or read book Uruguayan Cinema 1960 2010 written by Beatriz Tadeo Fuica and published by Tamesis Books. This book was released on 2017 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: An original and groundbreaking historiography on fifty years of Uruguayan cinema.

Download or read book The Innocence of Objects written by Orhan Pamuk and published by ABRAMS. This book was released on 2012-09-25 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Nobel Prize winner’s catalog of his Istanbul museum is like “wandering past the illuminated windows of an arcade. . . . This book spills over with pleasure”(The New York Times). The culmination of decades of omnivorous collecting, Orhan Pamuk’s Museum of Innocence in Istanbul uses his novel of lost love, The Museum of Innocence, as a departure point to explore the city of his youth. In The Innocence of Objects, Pamuk’s catalog of this remarkable museum, he writes about things that matter deeply to him: the psychology of the collector, the proper role of the museum, the photography of old Istanbul (illustrated with Pamuk’s superb collection of haunting photographs and movie stills), and of course the customs and traditions of his beloved city. The book’s imagery is equally evocative, ranging from the ephemera of everyday life to the superb photographs of Turkish photographer Ara Güler. Combining compelling visual images and writing, The Innocence of Objects is an original work of art and literature.