Download or read book Contribution de la th orie des graphes l analyse d images num riques written by Jean-Gérard Pailloncy and published by . This book was released on 1999 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les questions liées à la représentation des segmentations d'images ont provoqué un intérêt croissant pour les graphes. Après un descriptif des bases de topologie et de graphe, où nous nous baserons sur les complexes cellulaires de Kovalesky pour définir une topologie sur les images, nous étudierons particulièrement les graphes d'adjacence de régions et les cartes discrètes dans la perceptive de réduire la taille la taille de la structure tout en préservant le maximum de propriétés héritées de la topologie du support de l'image. L'utilisation des cartes discrètes sur des architectures parallèles est présentée. Nous montrons que le graphe d'adjacence de régions n'est pas très adapté au parallélisme car le maintien de la cohérence des informations entre les processeurs est coûteux à réaliser tandis que l'utilisation du graphe dual, cependant légèrement modifié, est bien adaptée. Ce travail a été ensuite ouvert sur la construction de hiérarchies de graphes par fusion de régions et sur l'appariement partiel de ces hiérarchies. Un domaine différent est ensuite abordé : la généralisation de la déformation de courbes discrètes à des supports irréguliers en 2D, ainsi que la mise en évidence des difficultés de généralisation en 3D. Enfin une synthèse est présentée sur une ouverture possible des graphes d'adjacence de régions, qui n'ont qu'un seul type d'arête mais ont une représentation hiérarchique, vers les graphes sémantiques, qui ont plusieurs types d'arêtes mais n'ont pas de représentation hiérarchique
Download or read book Contribution de la th orie des hypergraphes au traitement des images num riques written by Serge Chastel and published by . This book was released on 2001 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les récents développements en traitement d'image ont fait apparaître l'intérêt des formalisations discrètes de l'image numérique et de l'étude de celles-ci au moyen de la combinatoire. Dans ce mémoire, nous nous sommes intéressés à des modélisations de l'image numérique par le biais de la théorie des hypergraphes. Notre contribution est essentiellement axée sur la détermination de propriétés mathématiques que peuvent posséder de telles structures et d'analyser leur adéquation avec des problématiques de l'image. Dans un premier temps, nous étudions la modélisation par hypergraphes de voisinages des images numériques. Un outil de visualisation de telles structures est présenté. Reprenant les précédents travaux déjà menés sur le sujet, nous étudions le problème de la recherche exhaustive de cliques (sous-graphes complets maximaux au sens de l'inclusion) dans les graphes, et proposons un algorithme de description de cet ensemble. Nous établissons ensuite une définition formelle des zones de contours de régions dans l'image et un algorithme quadratique de détermination de celles-ci. Nous nous intéressons ensuite à une autre modélisation par hypergraphe qui s'affranchit de la contrainte spatiale des hypergraphes de voisinages d'image : les hypergraphes de polyominos d'image. Ceux-ci consistent en un recouvrement de l'image par des rectangles maximaux définis au sens d'un critère radiométrique. La correction d'une telle modélisation est illustrée par une définition formelle de la notion de bruit dans l'image numérique et est complétée par un algorithme de détection de celui-ci, par une série d'expérimentations et par une étude comparative avec d'autres algorithmes de détection. En définitive, ce travail porte sur la présentation et l'évaluation de formalisations mathématiques combinatoires de l'image numérique par hypergraphes et a pour but d'étudier si des propriétés caractéristiques de ces formalisations sont représentatives de problématiques de l'image numérique.
Download or read book Recherche de motifs dans des images written by Emilie Samuel and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: La reconnaissance de formes s'intéresse à la détection automatique de motifs dans des données d'entrée, afin de pouvoir, par exemple, les classer en catégories. La matière première de ces techniques est bien souvent l'image numérique. Cette dernière, dans sa forme la plus courante, est codée sous la forme d'une matrice de pixels. Néanmoins, la question du développement de représentations plus riches se pose. Ainsi, la structuration de l'information contenue dans l'image devrait permettre la mise en évidence des différents objets représentés, et des liens les unissant. C'est pourquoi nous proposons de modéliser les images numériques sous forme de graphes, pour leur richesse et expressivité d'une part, et pour exploiter les résultats de la théorie des graphes en reconnaissance de formes d'autre part. Nous développons pour cela une méthode d'extraction de graphes plans à partir d'images, basée sur le respect de la sémantique. Nous montrons que nous pouvons, étant donné un graphe, reconstruire avec perte limitée l'image d'origine. Par la suite, nous introduisons les graphes plans à trous, graphes dont les faces peuvent être visibles ou invisibles. Leur justification trouve sa place dans la recherche de motifs notamment, pour laquelle les éléments constituant l'arrière-plan d'une image ne doivent pas être retrouvés. En dirigeant notre attention sur la planarité de ces graphes, nous proposons des algorithmes polynomiaux d'isomorphisme de graphes plans et de motifs ; nous traitons également leur équivalence, qui se trouve être un isomorphisme aux faces invisibles près.
Download or read book Contribution en appariement de graphes pour la recherche d images par le contenu microforme written by Hlaoui, Adel and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2004 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aiding Decisions with Multiple Criteria written by Denis Bouyssou and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aiding Decisions With Multiple Criteria: Essays in Honor of Bernard Roy is organized around two broad themes: Graph Theory with path-breaking contributions on the theory of flows in networks and project scheduling, Multiple Criteria Decision Aiding with the invention of the family of ELECTRE methods and methodological contribution to decision-aiding which lead to the creation of Multi-Criteria Decision Analysis (MCDA). Professor Bernard Roy has had considerable influence on the development of these two broad areas. £/LIST£ Part one contains papers by Jacques Lesourne, and Dominique de Werra & Pierre Hansen related to the early career of Bernard Roy when he developed many new techniques and concepts in Graph Theory in order to cope with complex real-world problems. Part two of the book is devoted to Philosophy and Epistemology of Decision-Aiding with contributions from Valerie Belton & Jacques Pictet and Jean-Luis Genard & Marc Pirlot. Part three includes contributions based on Theory and Methodology of Multi-Criteria Decision-Aiding based on a general framework for conjoint measurement that allows intrasitive preferences. Denis Bouyssou & Marc Pirlot; Alexis Tsoukiàs, Patrice Perny & Philippe Vincke; Luis Dias & João Clímaco; Daniel Vanderpooten; Michael Doumpos & Constantin Zopounidis; and Marc Roubens offer a considerable range of examinations of this aspect of MCDA. Part four is devoted to Perference Modeling with contributions from Peter Fishburn; Salvatore Greco, Benedetto Matarazzo & Roman Slowinski; Salem Benferhat, Didier Dubois & Henri Prade; Oscar Franzese & Mark McCord; Bertrand Munier; and Raymond Bisdorff. Part five groups Applications of Multi-Criteria Decision-Aiding, and Carlos Henggeler Antunes, Carla Oliveira & João Clímaco; Carlos Bana e Costa, Manuel da Costa-Lobo, Isabel Ramos & Jean-Claude Vansnick; Yannis Siskos & Evangelos Grigoroudis; Jean-Pierre Brans, Pierre Kunsch & Bertrand Mareschal offer a wide variety of application problems. Finally, Part six includes contributions on Multi-Objective Mathematical Programming from Jacques Teghem, Walter Habenicht and Pekka Korhonen.
Download or read book Persistence Theory From Quiver Representations to Data Analysis written by Steve Y. Oudot and published by American Mathematical Soc.. This book was released on 2017-05-17 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: Persistence theory emerged in the early 2000s as a new theory in the area of applied and computational topology. This book provides a broad and modern view of the subject, including its algebraic, topological, and algorithmic aspects. It also elaborates on applications in data analysis. The level of detail of the exposition has been set so as to keep a survey style, while providing sufficient insights into the proofs so the reader can understand the mechanisms at work. The book is organized into three parts. The first part is dedicated to the foundations of persistence and emphasizes its connection to quiver representation theory. The second part focuses on its connection to applications through a few selected topics. The third part provides perspectives for both the theory and its applications. The book can be used as a text for a course on applied topology or data analysis.
Download or read book Lake Pavin written by Télesphore Sime-Ngando and published by Springer. This book was released on 2018-07-07 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents the first multidisciplinary scientific work on a deep volcanic maar lake in comparison with other similar temperate lakes. The syntheses of the main characteristics of Lake Pavin are, for the first time, set in a firmer footing comparative approach, encompassing regional, national, European and international aquatic science contexts. It is a unique lake because of its permanently anoxic monimolimnion, and furthermore, because of its small surface area, its substantially low human influence, and by the fact that it does not have a river inflow. The book reflects the scientific research done on the general limnology, history, origin, volcanology and geological environment as well as on the geochemistry and biogeochemical cycles. Other chapters focus on the biology and microbial ecology whereas the sedimentology and paleolimnology are also given attention. This volume will be of special interest to researchers and advanced students, primarily in the fields of limnology, biogeochemistry, and aquatic ecology.
Download or read book Local Approximation Techniques in Signal and Image Processing written by Vladimir I︠A︡kovlevich Katkovnik and published by SPIE-International Society for Optical Engineering. This book was released on 2006 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with a wide class of novel and efficient adaptive signal processing techniques developed to restore signals from noisy and degraded observations. These signals include those acquired from still or video cameras, electron microscopes, radar, X-rays, or ultrasound devices, and are used for various purposes, including entertainment, medical, business, industrial, military, civil, security, and scientific. In many cases useful information and high quality must be extracted from the imaging. However, often raw signals are not directly suitable for this purpose and must be processed in some way. Such processing is called signal reconstruction. This book is devoted to a recent and original approach to signal reconstruction based on combining two independent ideas: local polynomial approximation and the intersection of confidence interval rule.
Download or read book Combinatorial Enumeration written by Ian P. Goulden and published by Courier Corporation. This book was released on 2004-06-23 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: This graduate-level text presents mathematical theory and problem-solving techniques associated with enumeration problems. Subjects include the combinatorics of the ordinary generating function and the exponential generating function, the combinatorics of sequences, and the combinatorics of paths. The text is complemented by approximately 350 exercises with full solutions. 1983 edition. Foreword by Gian-Carlo Rota. References. Index.
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 Miguel de Unamuno written by Julián Marías and published by . This book was released on 2013-10-01 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Buyology written by Martin Lindstrom and published by Currency. This book was released on 2010-02-02 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: NEW YORK TIMES BESTSELLER • “A fascinating look at how consumers perceive logos, ads, commercials, brands, and products.”—Time How much do we know about why we buy? What truly influences our decisions in today’s message-cluttered world? In Buyology, Martin Lindstrom presents the astonishing findings from his groundbreaking three-year, seven-million-dollar neuromarketing study—a cutting-edge experiment that peered inside the brains of 2,000 volunteers from all around the world as they encountered various ads, logos, commercials, brands, and products. His startling results shatter much of what we have long believed about what captures our interest—and drives us to buy. Among the questions he explores: • Does sex actually sell? • Does subliminal advertising still surround us? • Can “cool” brands trigger our mating instincts? • Can our other senses—smell, touch, and sound—be aroused when we see a product? Buyology is a fascinating and shocking journey into the mind of today's consumer that will captivate anyone who's been seduced—or turned off—by marketers' relentless attempts to win our loyalty, our money, and our minds.
Download or read book Studies in the Iconography of Northwest Semitic Inscribed Seals written by Benjamin Sass and published by Saint-Paul. This book was released on 1993 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Orthogonal Polynomials written by Herbert Stahl and published by Cambridge University Press. This book was released on 1992-04-24 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: An encyclopedic presentation of general orthogonal polynomials, placing emphasis on asymptotic behaviour and zero distribution.
Download or read book Historical journey in a linguistic archipelago written by Émilie Aussant and published by BoD – Books on Demand. This book was released on 2020-12-14 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume offers a selection of papers presented during the 14th International Conference on the History of the Language Sciences (ICHoLS XIV, Paris, 2017). Part I brings together studies dealing with descriptive concepts. First examined is the notion of “accidens” in Latin grammar and its Greek counterparts. Other papers address questions with a strong echo in today’s linguistics: localism and its revival in recent semantics and syntax, the origin of the term “polysemy” and its adoption through Bréal, and the difficulties attending the description of prefabs, idioms and other “fixed expressions”. This first part also includes studies dealing with representations of linguistic phenomena, whether these concern the treatment of local varieties (so-called patois) in French research, or the import and epistemological function of spatial representations in descriptions of linguistic time. Or again, now taking the word “representation” literally, the visual display of grammatical relations, in the form of the first syntactic diagrams. Part II presents case studies which involve wider concerns, of a social nature: the “from below” approach to the history of Chinese Pidgin English underlines the social roles of speakers and the diversity of speech situations, while the scrutiny of Lhomond’s Latin and French textbooks demonstrates the interplay of pedagogical practice, cross-linguistic comparison and descriptive innovation. An overview of early descriptions of Central Australian languages reveals a whole spectrum of humanist to positivist and antihumanist stances during the colonial age. An overarching framework is also at play in the anthropological perspective championed by Meillet, whose socially and culturally oriented semantics is shown to live on in Benveniste. The volume ends with a paper on Trần Đức Thảo, whose work is an original synthesis between phenomenology and Marxist semiology, wielded against the “idealistic” doctrine of Saussure.
Download or read book Faecal Sludge Management written by Linda Strande and published by IWA Publishing. This book was released on 2014-08-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
Download or read book Multiple Correspondence Analysis and Related Methods written by Michael Greenacre and published by CRC Press. This book was released on 2006-06-23 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a generalization of simple correspondence analysis, multiple correspondence analysis (MCA) is a powerful technique for handling larger, more complex datasets, including the high-dimensional categorical data often encountered in the social sciences, marketing, health economics, and biomedical research. Until now, however, the literature on the su
