Cartes De Saillances Et Valuation De La Qualit Des Maillages 3d
DOWNLOAD
Download Cartes De Saillances Et Valuation De La Qualit Des Maillages 3d PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Cartes De Saillances Et Valuation De La Qualit Des Maillages 3d book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Cartes De Saillances Et Valuation De La Qualit Des Maillages 3d
DOWNLOAD
Author : Anass Nouri
language : fr
Publisher:
Release Date : 2016
Cartes De Saillances Et Valuation De La Qualit Des Maillages 3d written by Anass Nouri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Le regard de tout être humain est attiré par des régions particulières appartenant aux objets (pouvant être re-présentés par des maillages 3D). Cette attractivité dépend fortement du degré de saillance exposé par ces régions. Le premier objectif de cette thèse est de proposer et de mettre en oeuvre un modèle permettant de détecter automati-quement les zones saillantes sur les maillages 3D non colorés. Nous considérons qu'un noeud du maillage est saillant s'il ressort fortement de son voisinage local et si sa configuration géométrique est différente de celle de ses voisins adjacents. Pour cela nous caractérisons la surface du maillage par un descripteur local sous forme de patch de taille adaptative. Ce dernier est utilisé dans le calcul des similarités et intégré dans le calcul de la carte saillance multi-échelle. Nous proposons également une extension de ce modèle pour la détection de la saillance des maillages colorés. Quatre appli-cations basées sur le modèle de saillance proposé ont été développées après la validation des résultats de notre mo-dèle sur des maillages non colorés issus d'une pseudo vérité terrain. Les premières et deuxièmes applications concer-nent respectivement la sélection automatique des points de vues optimaux et la compression adaptative des maillages 3D non colorés. Les troisièmes et quatrièmes applications s'inscrivent respectivement dans le cadre de l'amélioration de détails et du lissage adapatatif des maillages 3D colorés. Le deuxième objectif de cette thèse consiste à proposer une métrique d'évaluation de la qualité avec référence des maillages 3D. En mettant en entrée de cette métrique un maillage original (supposé parfait sans dégradation) et un deuxième maillage dégradé, le but sera d'évaluer le degré de fidélité du maillage dégradé relativement à sa version de référence en fournissant un score de de fidélité qui soit le plus proche possible des scores fournis par les observateurs humains. Étant donné que la saillance visuelle est une information pertinente pour notre système visuel, son utilisation dans le pipeline de la métrique est naturel. Nous utili-sons deux propriétés des maillages 3D pour évaluer objectivement la qualité : la saillance multi-échelle et la rugosité. En effet, la carte de saillance servira à l'extraction des informations structurelles du maillage 3D et la carte de rugosité à la prise en compte de l'effet de masquage visuel. Nous introduisons quatre fonctions de comparaisons entre deux voisinages locaux correspondants des deux maillages pour estimer les différences structurelles entre eux. Nous combi-nons ces dernières par une somme de Minkowski pondérée pour obtenir le score de qualité final. Le troisième objectif de cette thèse s'inscrit dans la mise en oeuvre d'une métrique d'évaluation de la qualité sans référence d'un maillage 3D. Contrairement à une métrique avec référence, cette catégorie de métriques est considérée comme la plus épi-neuse pour évaluer objectivement la qualité d'un maillage dégradé dans la mesure où la version de référence du mail-lage n'est pas utilisée. Similairement à la métrique avec référence, nous supposons que la qualité visuelle d'un mail-lage 3D est davantage dépréciée lorsque les régions saillantes du maillage sont affectées et vice-versa. Nous commen-çons par segmenter le maillage en un nombre de superfacettes qui joueront le rôle de patchs locaux dans ce contexte. Nous affectons à chaque noeud d'une superfacette ses valeurs de saillance et de rugosité respectives puis nous ex-trayons quatre caractéristiques locales de chaque superfacette (moyenne de la saillance, écart type de la saillance, covariance de la saillance et la moyenne de la rugosité). Les variations de ces quatre caractéristiques quantifient les distorsions que peut subir un maillage. Finalement, nous effectuons un apprentissage basé sur les Séparateurs à Vastes Marges (SVM) en utilisant le vecteur de caractéristiques construit : puis pour passer d'une représentation vectorielle du maillage à un score de qualité final, nous utilisons une régression par SVMs.
Intelligent Multidimensional Data And Image Processing
DOWNLOAD
Author : De, Sourav
language : en
Publisher: IGI Global
Release Date : 2018-06-08
Intelligent Multidimensional Data And Image Processing written by De, Sourav and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-08 with Computers categories.
As the most natural and convenient means of conveying or transmitting information, images play a vital role in our daily lives. Image processing is now of paramount importance in the computer vision research community, and proper processing of two-dimensional (2D) real-life images plays a key role in many real-life applications as well as commercial developments. Intelligent Multidimensional Data and Image Processing is a vital research publication that contains an in-depth exploration of image processing techniques used in various applications, including how to handle noise removal, object segmentation, object extraction, and the determination of the nearest object classification and its associated confidence level. Featuring coverage on a broad range of topics such as object detection, machine vision, and image conversion, this book provides critical research for scientists, computer engineers, professionals, researchers, and academicians seeking current research on solutions for new challenges in 2D and 3D image processing.
Epipolar Geometry In Stereo Motion And Object Recognition
DOWNLOAD
Author : Gang Xu
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Epipolar Geometry In Stereo Motion And Object Recognition written by Gang Xu and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Computers categories.
Appendix 164 3. A 3. A. 1 Approximate Estimation of Fundamental Matrix from General Matrix 164 3. A. 2 Estimation of Affine Transformation 165 4 RECOVERY OF EPIPOLAR GEOMETRY FROM LINE SEGMENTS OR LINES 167 Line Segments or Straight Lines 168 4. 1 4. 2 Solving Motion Using Line Segments Between Two Views 173 4. 2. 1 Overlap of Two Corresponding Line Segments 173 Estimating Motion by Maximizing Overlap 175 4. 2. 2 Implementation Details 4. 2. 3 176 Reconstructing 3D Line Segments 4. 2. 4 179 4. 2. 5 Experimental Results 180 4. 2. 6 Discussions 192 4. 3 Determining Epipolar Geometry of Three Views 194 4. 3. 1 Trifocal Constraints for Point Matches 194 4. 3. 2 Trifocal Constraints for Line Correspondences 199 4. 3. 3 Linear Estimation of K, L, and M Using Points and Lines 200 4. 3. 4 Determining Camera Projection Matrices 201 4. 3. 5 Image Transfer 203 4. 4 Summary 204 5 REDEFINING STEREO, MOTION AND OBJECT RECOGNITION VIA EPIPOLAR GEOMETRY 205 5. 1 Conventional Approaches to Stereo, Motion and Object Recognition 205 5. 1. 1 Stereo 205 5. 1. 2 Motion 206 5. 1. 3 Object Recognition 207 5. 2 Correspondence in Stereo, Motion and Object Recognition as 1D Search 209 5. 2. 1 Stereo Matching 209 xi Contents 5. 2. 2 Motion Correspondence and Segmentation 209 5. 2. 3 3D Object Recognition and Localization 210 Disparity and Spatial Disparity Space 210 5.
Point Pattern Analysis
DOWNLOAD
Author : Barry N. Boots
language : en
Publisher: SAGE Publications, Incorporated
Release Date : 1988-03
Point Pattern Analysis written by Barry N. Boots and has been published by SAGE Publications, Incorporated this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988-03 with Mathematics categories.
Boots and Getis provide a concise explanation of point pattern analysis - a series of techniques for identifying patterns of clustering or regularity in a set of geographical locations. They discuss quadrat and distance methods of measurement, and consider the problems associated with these methods. The authors also outline and compare other measures of arrangement, suggesting when these techniques should be used.
Spatial Statistics And Models
DOWNLOAD
Author : G.L. Gaile
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-27
Spatial Statistics And Models written by G.L. Gaile and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-27 with Social Science categories.
The quantitative revolution in geography has passed. The spirited debates of the past decades have, in one sense, been resolved by the inclusion of quantitative techniques into the typical geographer's set of methodological tools. A new decade is upon us. Throughout the quantitative revolution, geographers ransacked related disciplines and mathematics in order to find tools which might be applicable to problems of a spatial nature. The early success of Berry and Marble's Spatial Analysis and Garrison and Marble's volumes on Quantitative Geog raphy is testimony to their accomplished search. New developments often depend heavily on borrowed ideas. It is only after these developments have been established that the necessary groundwork for true innovation ob tains. In the last decade, geographers significantly -augmented their methodologi cal base by developing quantitative techniques which are specifically directed towards analysis of explicitly spatial problems. It should be pointed out, however, that the explicit incorporation of space into quantitative techniques has not been the sole domain of geographers. Mathematicians, geologists, meteorologists, economists, and regional scientists have shared the geo grapher's interest in the spatial component of their analytical tools.
3d Video
DOWNLOAD
Author : Laurent Lucas
language : en
Publisher: John Wiley & Sons
Release Date : 2013-12-04
3d Video written by Laurent Lucas and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-04 with Technology & Engineering categories.
While 3D vision has existed for many years, the use of 3D cameras and video-based modeling by the film industry has induced an explosion of interest for 3D acquisition technology, 3D content and 3D displays. As such, 3D video has become one of the new technology trends of this century. The chapters in this book cover a large spectrum of areas connected to 3D video, which are presented both theoretically and technologically, while taking into account both physiological and perceptual aspects. Stepping away from traditional 3D vision, the authors, all currently involved in these areas, provide the necessary elements for understanding the underlying computer-based science of these technologies. They consider applications and perspectives previously unexplored due to technological limitations. This book guides the reader through the production process of 3D videos; from acquisition, through data treatment and representation, to 3D diffusion. Several types of camera systems are considered (multiscopic or multiview) which lead to different acquisition, modeling and storage-rendering solutions. The application of these systems is also discussed to illustrate varying performance benefits, making this book suitable for students, academics, and also those involved in the film industry.
The Om Composer S Book 2
DOWNLOAD
Author : Carlos Agon
language : en
Publisher:
Release Date : 2008
The Om Composer S Book 2 written by Carlos Agon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with OpenMusic (Computer program language) categories.
Pattern Recognition And Artificial Intelligence
DOWNLOAD
Author : Yue Lu
language : en
Publisher: Springer Nature
Release Date : 2020-10-09
Pattern Recognition And Artificial Intelligence written by Yue Lu and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-09 with Computers categories.
This book constitutes the proceedings of the Second International Conference on Pattern Recognition and Artificial Intelligence, ICPRAI 2020, which took place in Zhongshan, China, in October 2020. The 49 full and 14 short papers presented were carefully reviewed and selected for inclusion in the book. The papers were organized in topical sections as follows: handwriting and text processing; features and classifiers; deep learning; computer vision and image processing; medical imaging and applications; and forensic studies and medical diagnosis.
Handbook Of Participatory Video
DOWNLOAD
Author : E-J Milne
language : en
Publisher: AltaMira Press
Release Date : 2012-08-31
Handbook Of Participatory Video written by E-J Milne and has been published by AltaMira Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-08-31 with Social Science categories.
Participatory video is a growing area of research and an increasingly popular tool among practitioners, researchers, and NGOs working with communities around the world. The Handbook of Participatory Video advances the field, engaging critically with it as a research methodology and method and interrogating assumptions about its emancipatory nature and potential for social change. In twenty-eight chapters, contributors examine historical, ethical, methodological, and technical aspects of participatory video and discuss power, ownership, and knowledge production. The Handbook is organized into six parts: Locating Participatory Video, Participatory Video as a Critical Research Methodology, Working with Visual Data, Power and Ethics in Participatory Video, Dissemination and Reaching New Audiences, and Communities and Technologies. This benchmark work takes an interdisciplinary and global approach and will be invaluable to researchers, practitioners, and students.
Geosimulation
DOWNLOAD
Author : Itzhak Benenson
language : en
Publisher: John Wiley & Sons
Release Date : 2004-08-20
Geosimulation written by Itzhak Benenson and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-08-20 with Science categories.
Geosimulation is hailed as ‘the next big thing’ in geographic modelling for urban studies. This book presents readers with an overview of this new and innovative field by introducing the spatial modelling environment and describing the latest research and development using cellular automata and multi-agent systems. Extensive case studies and working code is available from an associated website which demonstrate the technicalities of geosimulation, and provide readers with the tools to carry out their own modelling and testing. The first book to treat urban geosimulation explicitly, integrating socio-economic and environmental modelling approaches Provides the reader with a sound theoretical base in the science of geosimulation as well as applied material on the construction of geosimulation models Cross-references to an author-maintained associated website with downloadable working code for readers to apply the models presented in the book Visit the Author's Website for further information on Geosimulation, Geographic Automata Systems and Geographic Automata Software http://www.geosimulationbook.com