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Segmentation Optimale Par Contour Actif Geometrique Binaire Rapide
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Book Synopsis Segmentation optimale par contour actif géométrique binaire rapide by : Foued Derraz
Download or read book Segmentation optimale par contour actif géométrique binaire rapide written by Foued Derraz and published by . This book was released on 2010 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Depuis quelques années la vision par ordinateur est en plein essor. Le développement des méthodes mathématiques dans ce domaine couvre d'ailleurs un large éventail de champs d'investigations ; les problèmes inverses, la reconstitution d'images, la compression d'images, l'atténuation du bruit et la segmentation d'images. Dans le cadre de cette thèse, nous nous sommes intéressés au problème de la segmentation d'images par contours actifs géométriques. Nous avons étudié et développé une méthode de segmentation optimale par contour actif géométrique binaire rapide avec et sans connaissances a priori. Pour cela nous proposons un nouveau cadre varationnel pour la résolution du problème de segmentation où nous cherchons à résoudre le problème des minimums locaux. En d'autres termes ce cadre permet de transformer le problème non convexe en un problème convexe.
Book Synopsis Modèles de contours actifs pour la segmentation d'images et de vidéos by : Muriel Gastaud
Download or read book Modèles de contours actifs pour la segmentation d'images et de vidéos written by Muriel Gastaud and published by . This book was released on 2005 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: La segmentation en objets d’une image consiste à extraire une ou des régions d’intérêt de l’image, suivant un critère défini. Nous segmentons l’image par un algorithme de contours actifs, dans le cadre d’une approche variationnelle. Partant, d’un contour initial quelconque, le contour actif évolue vers la région d’intérêt, dirigé par une équation aux dérivées partielles. L’équation d’évolution du contour actif est déduite de la dérivation du critère définissant la région. Au vu de la dépendance du critère à la région considérée, la dérivation du critère par rapport à la région n’est pas aisée. Nous utilisons des outils de dérivation empruntés à l’optimisation de domaine : les gradients de forme. La contribution de cette thèse réside dans l’élaboration et l’étude de différents descripteurs de régions. Pour chaque critère, nous calculons la dérivée du critère à l’aide des gradients de forme et en déduisons l’équation d’évolution du contour actif. Le premier descripteur définit un a priori géométrique sans contrainte paramétrique : il minimise la distance du contour actif à un contour de référence. Nous l’avons appliqué à la déformation de courbe (shape warping), la segmentation et le suivi de cible (tracking). Le deuxième descripteur définit conjointement une région et son mouvement sur plusieurs images consécutives. Le mouvement de la région est représenté par un modèle de mouvement. Nous avons appliqué ce critère à l’estimation et la segmentation conjointe du mouvement et au suivi d’objets en mouvement.
Book Synopsis Méthodes d'accélération et approches supervisées pour les contours actifs by : Julien Olivier
Download or read book Méthodes d'accélération et approches supervisées pour les contours actifs written by Julien Olivier and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans cette thèse, plusieurs approches permettant d'améliorer les contours actifs sont présentées. Trois méthodes d'accélération ont été développées pour les modèle paramétriques se déformant par évolution gloutonne et appliquées à la segmentation 2D et 3D. Leur principe est d'autoriser une gestion dynamique de la grille de voisinage de chaque point de contrôle du contour actif. Deux modèles supervisés implémentés à l'aide des ensembles de niveaux sont également détaillés. Ceux-ci se basent sur les caractéristiques de textures d'Haralick et utilisent une image d'apprentissage possédant une segmentation experte. Le premier modèle est un contour actif basé région inspiré du modèle de Chan et Vese. Le principe de la programmation linéaire est alors utilisé pour déterminer le poids optimal à affecter à chaque coefficient d'Haralick. Le deuxième modèle introduit un classificateur binaire, appris grâce à la segmentation experte, directement dans l'équation d'évolution du contour actif. Les deux modèles sont appliqués à la segmentation d'images texturées 2D et 3D.
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Book Synopsis Dictionary of Building and Civil Engineering by : Don Montague
Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
Author :Vladimir I︠A︡kovlevich Katkovnik Publisher :SPIE-International Society for Optical Engineering ISBN 13 : Total Pages :584 pages Book Rating :4.3/5 (91 download)
Book Synopsis Local Approximation Techniques in Signal and Image Processing by : Vladimir I︠A︡kovlevich Katkovnik
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.
Book Synopsis Quantum Mechanics, Volume 3 by : Claude Cohen-Tannoudji
Download or read book Quantum Mechanics, Volume 3 written by Claude Cohen-Tannoudji and published by John Wiley & Sons. This book was released on 2019-12-16 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.
Download or read book Geomarketing written by Gérard Cliquet and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title describes the state of the art in all areas of spatial marketing, discussing the various constituents which make up the geography of markets. Demand varies according to location and can be measured according to revenue, the number of households, spending patterns and lifestyles. Supply is also dependent on position, because prices, services, products and available shops rely on location, while the difference between supply and demand is the rationale for the role of the trader. The book also covers the way geographic techniques help to solve marketing problems and contains chapters written by contributors with extensive experience in this field; given that it is crucial for companies to direct their marketing correctly at their target audience, this will be indispensable reading for those involved in this area.
Book Synopsis Statistical Applications in the Earth Sciences by : F. P. Agterberg
Download or read book Statistical Applications in the Earth Sciences written by F. P. Agterberg and published by Energy, Mines and Resources Canada. This book was released on 1990 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of papers presented at the Colloquium, covering the broad subject areas of spatial data integration, statistical analysis of geoscience data, and quantitative stratigraphy. Working Group reports are included as well.
Book Synopsis PET/MRI: Clinical Applications, An Issue of PET Clinics, E-Book by : Drew A. Torigian
Download or read book PET/MRI: Clinical Applications, An Issue of PET Clinics, E-Book written by Drew A. Torigian and published by Elsevier Health Sciences. This book was released on 2016-09-10 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This issue of PET Clinics focuses on PET/MRI: Clinical Applications, and is edited by Drs. Drew Torigian and Andreas Kjaer. Articles will include: PET/MRI in Prostate Cancer; PET/MRI in Vascular Disease; PET/MRI in Lymphoma; PET/MRI in Head and Neck Cancer; PET/MRI in Brain Disease; PET/MR in Cancers of GI Tract; PET/MRI in Gynecologic Cancer; Clinical PET/MRI Systems and Patient Workflow; PET/MRI in Heart Disease; PET/MR in Breast Cancer and Lung Cancer; PET/MRI in Musculoskeletal Disorders; PET/MRI in Pediatric Oncology; Clinical PET/MRI: Future Perspectives; and more!
Book Synopsis Handbook of Raman Spectroscopy by : Ian R. Lewis
Download or read book Handbook of Raman Spectroscopy written by Ian R. Lewis and published by CRC Press. This book was released on 2001-08-08 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work covers principles of Raman theory, analysis, instrumentation, and measurement, specifying up-to-the-minute benefits of Raman spectroscopy in a variety of industrial and academic fields, and how to cultivate growth in new disciplines. It contains case studies that illustrate current techniques in data extraction and analysis, as well as over 500 drawings and photographs that clarify and reinforce critical text material. The authors discuss Raman spectra of gases; Raman spectroscopy applied to crystals, applications to gemology, in vivo Raman spectroscopy, applications in forensic science, and collectivity of vibrational modes, among many other topics.
Book Synopsis Artificial Intelligence and Computer Vision by : Y.A. Feldman
Download or read book Artificial Intelligence and Computer Vision written by Y.A. Feldman and published by Elsevier. This book was released on 1991-06-17 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current research in artificial intelligence and computer vision presented at the Israeli Symposium are combined in this volume to present an invaluable resource for students, industry and research organizations. Papers have been contributed from researchers worldwide, showing the growing interest of the international community in the work done in Israel. The papers selected are varied, reflecting the most contemporary research trends.
Book Synopsis Mathematics, Education and History by : Kathleen M. Clark
Download or read book Mathematics, Education and History written by Kathleen M. Clark and published by Springer. This book was released on 2018-03-30 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book includes 18 peer-reviewed papers from nine countries, originally presented in a shorter form at TSG 25 The Role of History of Mathematics in Mathematics Education, as part of ICME-13 during. It also features an introductory chapter, by its co-editors, on the structure and main points of the book with an outline of recent developments in exploring the role of history and epistemology in mathematics education. It serves as a valuable contribution in this domain, by making reports on recent developments in this field available to the international educational community, with a special focus on relevant research results since 2000. The 18 chapters of the book are divided into five interrelated parts that underlie the central issues of research in this domain: 1. Theoretical and conceptual frameworks for integrating history and epistemology in mathematics in mathematics education; 2. Courses and didactical material: Design, implementation and evaluation; 3. Empirical investigations on implementing history and epistemology in mathematics education; 4. Original historical sources in teaching and learning of and about mathematics; 5. History and epistemology of mathematics: Interdisciplinary teaching and sociocultural aspects. This book covers all levels of education, from primary school to tertiary education, with a particular focus on teacher education. Additionally, each chapter refers to and/or is based on empirical research, in order to support, illuminate, clarify and evaluate key issues, main questions, and conjectured theses raised by the authors or in the literature on the basis of historical-epistemological or didactical-cognitive arguments.
Book Synopsis Monitoring soils in the environment with remote sensing and gis by : Richard Escadafal
Download or read book Monitoring soils in the environment with remote sensing and gis written by Richard Escadafal and published by IRD Orstom. This book was released on 1996 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: ISSS congress remote sensing
Book Synopsis Quantitative Analysis in Nuclear Medicine Imaging by : Habib Zaidi
Download or read book Quantitative Analysis in Nuclear Medicine Imaging written by Habib Zaidi and published by Springer Science & Business Media. This book was released on 2006-07-11 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a review of image analysis techniques as they are applied in the field of diagnostic and therapeutic nuclear medicine. Driven in part by the remarkable sophistication of nuclear medicine instrumentation and - crease in computing power and its ready and inexpensive availability, this is a relatively new yet rapidly expanding field. Likewise, although the use of nuclear imaging for diagnosis and therapy has origins dating back almost to the pioneering work of Dr G. de Hevesy, quantitative imaging has only recently emerged as a promising approach for diagnosis and therapy of many diseases. An effort has, therefore, been made to place the reviews provided in this book in a broader context. The effort to do this is reflected by the inclusion of introductory chapters that address basic principles of nuclear medicine instrumentation and dual-modality imaging, followed by overview of issues that are closely related to quantitative nuclear imaging and its potential role in diagnostic and therapeutic applications. A brief overview of each chapter is provided below. Chapter 1 presents a general overview of nuclear medicine imaging physics and instrumentation including planar scintigraphy, single-photon emission computed tomography (SPECT) and positron emission tomography (PET). Nowadays, patients’ diagnosis and therapy is rarely done without the use of imaging technology. As such, imaging considerations are incorporated in almost every chapter of the book. The development of dual-modality - aging systems is an emerging research field, which is addressed in chapter 2.
Book Synopsis Source of Everyday by : Aldren Watson
Download or read book Source of Everyday written by Aldren Watson and published by Grosset & Dunlap. This book was released on 1978-03 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Instrumentation, an Issue of Pet Clinics by : Habib Zaidi
Download or read book Instrumentation, an Issue of Pet Clinics written by Habib Zaidi and published by Saunders. This book was released on 2008-03 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Currently there is no shortage of challenges and opportunities for PET instrumentation and quantitative imaging techniques. Molecular imaging technologies are leading to a revolutionary paradigm shift in health care and clinical practice. This issue reviews recent advances in PET instrumentation as well as volume correction strategies and strategies for motion tracking and correction, scatter compensation techniques, and attenuation correction techniques.
