Segmentation par contours actifs et flux de vecteurs gradients

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Publisher :
ISBN 13 :
Total Pages : 141 pages
Book Rating : 4.:/5 (493 download)

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Book Synopsis Segmentation par contours actifs et flux de vecteurs gradients by : Laurence Guillot

Download or read book Segmentation par contours actifs et flux de vecteurs gradients written by Laurence Guillot and published by . This book was released on 2008 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le processus de segmentation par contours actifs est une étape de traitement qui délimite les différentes régions d'une image à l'aide de leur frontière. Les inconvénients de cette méthode ont motivé la recherche d'un nouveau champ de force externe non dérivé d'un potentiel : le flux de vecteurs gradients (GVF) défini par C.Xu et J.L.Prince comme la solution d'un problème de minimisation.Nous étudions ici les propriétés mathématiques d'existence et de régularité du flux de vecteurs gradients. Ensuite le GVF combiné avec le modèle des contours actifs géodésiques par N.Paragios et al. conduit à une équation de Hamilton-Jacobi dont nous montrons l'existence et l'unicité d'une solution de viscosité. Nous implémentons ce modèle en utilisant dans un premier temps un schéma explicite puis un schéma de type AOS (« Additive Operator Splitting ») et l'appliquons à des images de tuffeau obtenues par microtomographie aux rayons X, afin d'identifier les différents composants de la pierre.

Modèles de contours actifs pour la segmentation d'images et de vidéos

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Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.:/5 (492 download)

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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.

The Aesthetics of Movement

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Publisher :
ISBN 13 :
Total Pages : 276 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis The Aesthetics of Movement by : Camilla Damkjær

Download or read book The Aesthetics of Movement written by Camilla Damkjær and published by . This book was released on 2005 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Observation and Control for Operator Semigroups

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Publisher : Springer Science & Business Media
ISBN 13 : 3764389931
Total Pages : 488 pages
Book Rating : 4.7/5 (643 download)

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Book Synopsis Observation and Control for Operator Semigroups by : Marius Tucsnak

Download or read book Observation and Control for Operator Semigroups written by Marius Tucsnak and published by Springer Science & Business Media. This book was released on 2009-03-13 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book studies observation and control operators for linear systems where the free evolution of the state can be described by an operator semigroup on a Hilbert space. It includes a large number of examples coming mostly from partial differential equations.

Functional Integration

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Publisher : Springer Science & Business Media
ISBN 13 : 1489903194
Total Pages : 436 pages
Book Rating : 4.4/5 (899 download)

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Book Synopsis Functional Integration by : Cécile Dewitt-Morette

Download or read book Functional Integration written by Cécile Dewitt-Morette and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: The program of the Institute covered several aspects of functional integration -from a robust mathematical foundation to many applications, heuristic and rigorous, in mathematics, physics, and chemistry. It included analytic and numerical computational techniques. One of the goals was to encourage cross-fertilization between these various aspects and disciplines. The first week was focused on quantum and classical systems with a finite number of degrees of freedom; the second week on field theories. During the first week the basic course, given by P. Cartier, was a presentation of a recent rigorous approach to functional integration which does not resort to discretization, nor to analytic continuation. It provides a definition of functional integrals simpler and more powerful than the original ones. Could this approach accommodate the works presented by the other lecturers? Although much remains to be done before answering "Yes," there seems to be no major obstacle along the road. The other courses taught during the first week presented: a) a solid introduction to functional numerical techniques (A. Sokal) and their applications to functional integrals encountered in chemistry (N. Makri). b) integrals based on Poisson processes and their applications to wave propagation (S. K. Foong), in particular a wave-restorer or wave-designer algorithm yielding the initial wave profile when one can only observe its distortion through a dissipative medium. c) the formulation of a quantum equivalence principle (H. Kleinert) which. given the flat space theory, yields a well-defined quantum theory in spaces with curvature and torsion.

Nanoparticulates as Drug Carriers

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Publisher : Imperial College Press
ISBN 13 : 186094907X
Total Pages : 758 pages
Book Rating : 4.8/5 (69 download)

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Book Synopsis Nanoparticulates as Drug Carriers by : V. P. Torchilin

Download or read book Nanoparticulates as Drug Carriers written by V. P. Torchilin and published by Imperial College Press. This book was released on 2006 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by key experts in the field of nanomedicine, this book provides a broad introduction to the important field of nanomedicine and application of nanotechnology for drug delivery. It covers up-to-date information regarding various nanoparticulate drug delivery systems, describes the various opportunities for the application of nanoparticular drug carriers in different areas of clinical medicine, and analyzes already available information on their clinical applications. This book can be used as an advanced textbook by graduate students and young scientists and clinicians at the early stages of their career. It is also suitable for non-experts from related areas of chemistry, biochemistry, molecular biology, biomedical engineering, physiology, experimental and clinical medicine, and pharmaceutical sciences, who are interested in general problems of drug delivery and drug targeting, as well as in more specialized topics of using nanoparticulate-mediated drug delivery approaches in the individual areas of clinical medicine. Prof Torchilin is an expert in Nanomedicine and a recipient of numerous awards including the Lenin Prize in Science & Technology of the former USSR, membership in the European Academy of Sciences, and AAPS Research Achievement Award in Pharmaceutics and Drug Delivery. He served as an Associate Professor of Radiology at Harvard Medical School before joining Northeastern University as the Chairman of the Department of Pharmaceutical Sciences. Sample Chapter(s). Chapter 1: Introduction. Nanocarriers for Drug Delivery: Needs and Requirements (442 KB). Contents: Nanoparticle Flow: Implications for Drug Delivery (A T Florence); Polymer Micelles as Drug Carriers (E V Batrakova et al.); Lipoproteins as Pharmaceutical Carriers (S Liu et al.); Dendrimers as Nanoparticular Drug Carriers (S Svenson & D A Tomalia); Cells and Cell Ghosts as Drug Carriers (J M Lanao & M L Sayalero); Magnetic Nanoparticles as Drug Carriers (U O Hnfeli & M Chastellain); Liposomal Drug Carriers in Cancer Therapy (A A Gabizon); Delivery of Nanoparticles to the Cardiovascular System (B-A Khaw); Nanoparticles for Targeting Lymphatics (W Phillips); Nanoparticular Carriers for Ocular Drug Delivery (A Sanchez & M J Alonso); and other papers. Readership: Graduate students, academics in nanomedicine, clinicians, pharmacologists, pharmacists, bioengineers, researchers in biotechnology and diagnostic imaging."

Modern Enterprise Data Pipelines

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Publisher :
ISBN 13 : 9781737362302
Total Pages : pages
Book Rating : 4.3/5 (623 download)

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Book Synopsis Modern Enterprise Data Pipelines by : Mike Bachman

Download or read book Modern Enterprise Data Pipelines written by Mike Bachman and published by . This book was released on 2021-06-25 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A Dell Technologies perspective on today's data landscape and the key ingredients for planning a modern, distributed data pipeline for your multicloud data-driven enterprise

Local Approximation Techniques in Signal and Image Processing

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Publisher : SPIE-International Society for Optical Engineering
ISBN 13 :
Total Pages : 584 pages
Book Rating : 4.3/5 (91 download)

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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.

Quantum Mechanics, Volume 3

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Publisher : John Wiley & Sons
ISBN 13 : 3527345558
Total Pages : 790 pages
Book Rating : 4.5/5 (273 download)

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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.

Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit

Download Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit PDF Online Free

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Publisher : Birkhäuser
ISBN 13 : 3034863101
Total Pages : 364 pages
Book Rating : 4.0/5 (348 download)

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Book Synopsis Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit by : Stuart Hill

Download or read book Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit written by Stuart Hill and published by Birkhäuser. This book was released on 2013-12-14 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Nationwide Evaluation of X-ray Trends

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Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Nationwide Evaluation of X-ray Trends by : Nationwide Evaluation of X-ray Trends Task Force

Download or read book Nationwide Evaluation of X-ray Trends written by Nationwide Evaluation of X-ray Trends Task Force and published by . This book was released on 1976 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Pathophysiology of Renal Disease

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Publisher :
ISBN 13 : 9783805509435
Total Pages : 246 pages
Book Rating : 4.5/5 (94 download)

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Book Synopsis Pathophysiology of Renal Disease by : Eberhard Ritz

Download or read book Pathophysiology of Renal Disease written by Eberhard Ritz and published by . This book was released on 1980 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Traditional Mediterranean Architecture

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Publisher :
ISBN 13 : 9788487104510
Total Pages : 139 pages
Book Rating : 4.1/5 (45 download)

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Book Synopsis Traditional Mediterranean Architecture by : Amin Maalouf

Download or read book Traditional Mediterranean Architecture written by Amin Maalouf and published by . This book was released on 2002 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Livestock Policy Analysis

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Publisher : ILRI (aka ILCA and ILRAD)
ISBN 13 : 9789291460038
Total Pages : 268 pages
Book Rating : 4.4/5 (6 download)

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Book Synopsis Livestock Policy Analysis by : International Livestock Research Institute

Download or read book Livestock Policy Analysis written by International Livestock Research Institute and published by ILRI (aka ILCA and ILRAD). This book was released on 1995-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Policy concepts; Identification of policy issues; Production systems, supply and demand; Market, price and trade policies; Marketing and distribution systems; Budget and manpower planning; Land tenure police for the livestock sector; Policy analysis report writing and communication; Livestock production and marketing in alphabeta - a case study.

Coral Reef Ascidians of New Caledonia

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Publisher : IRD Editions
ISBN 13 : 9782709910507
Total Pages : 252 pages
Book Rating : 4.9/5 (15 download)

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Book Synopsis Coral Reef Ascidians of New Caledonia by : Claude Monniot

Download or read book Coral Reef Ascidians of New Caledonia written by Claude Monniot and published by IRD Editions. This book was released on 1991 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Subsonic Aerodynamics

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Publisher : Presses inter Polytechnique
ISBN 13 : 9782553011306
Total Pages : 568 pages
Book Rating : 4.0/5 (113 download)

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Book Synopsis Subsonic Aerodynamics by : Ion Paraschivoiu

Download or read book Subsonic Aerodynamics written by Ion Paraschivoiu and published by Presses inter Polytechnique. This book was released on 2003 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Heritage Sites of Astronomy and Archaeoastronomy in the Context of the UNESCO World Heritage Convention

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Publisher : Ocarina Books
ISBN 13 :
Total Pages : 298 pages
Book Rating : 4.3/5 (21 download)

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Book Synopsis Heritage Sites of Astronomy and Archaeoastronomy in the Context of the UNESCO World Heritage Convention by : Clive L. N. Ruggles

Download or read book Heritage Sites of Astronomy and Archaeoastronomy in the Context of the UNESCO World Heritage Convention written by Clive L. N. Ruggles and published by Ocarina Books. This book was released on 2012 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Thematic Study is a joint venture between ICOMOS, the advisory body to UNESCO on cultural sites, and the International Astronomical Union. It presents an overall vision on astronomical heritage, attempts to identify what constitutes "outstanding universal significance to humankind" in relation to astronomy, and identifies broad issues that could arise in the assessment of cultural properties relating to astronomy. This is the first Thematic Study in any field of science heritage. It is elaborated using examples of properties from around the world, including some already on the World Heritage List or national Tentative Lists. The subject matter ranges from early prehistory to modern astrophysics and space heritage, and also prominently includes dark sky issues and modern observatory sites. An e-version of the Thematic Study was published in June 2010 in time to be presented to the 2010 meeting of UNESCO's World Heritage Committee, where it was duly approved. It has been circulated officially by the WHC to all of UNESCO's National Commissions. This full-colour paperback edition with some updates, and reformatted to new ICOMOS standards, was published in 2011 and is now offered for public sale.