Download or read book APPLICATION DE LA TRANSFORMEE EN ONDELETTES A LA DETECTION DE CONTOUR PAR FUSION MULTIECHELLE written by Olivier Laligant and published by . This book was released on 1995 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: NOUS PRESENTONS L'ETUDE D'UN ALGORITHME DE SEGMENTATION D'IMAGE AU SENS CONTOUR DESTINE A UN FONCTIONNEMENT EN TEMPS REEL. CE SYSTEME PERMET DE REALISER LA FUSION DES INFORMATIONS MULTIECHELLES DE CONTOURS FOURNIES PAR LE DETECTEUR DE CANNY-DERICHE GENERALISE PRECEDEMMENT DANS NOTRE LABORATOIRE (GERE) POUR LA DETECTION DE CONTOURS FLOUS. NOUS AVONS CARACTERISE CE FILTRE EN TANT QU'ONDELETTE MERE ET DETECTEUR, ET CE FILTRE A ETE IMPLANTE AU LABORATOIRE LIESIB DANS DES CIRCUITS FPGA POUR UN FONCTIONNEMENT A LA CADENCE VIDEO. LA FUSION EST REALISEE PAR UNE METHODE DE CLASSIFICATION GEOMETRIQUE DEVELOPPEE AU LABORATOIRE ET OPERANT ELLE AUSSI EN TEMPS REEL. LE SYSTEME DE SEGMENTATION OBTENU EST PARTICULIEREMENT ADAPTE AU CONTROLE PAR VISION ARTIFICIELLE DE PRODUITS INDUSTRIELS. CE SYSTEME PEUT EN EFFET FONCTIONNER DE FACON AUTONOME EN LIGNE SANS NECESSITER DE REGLAGES OU DE MODIFICATIONS EN CAS DE CHANGEMENT DES CONDITIONS DE PRISE DE VUE. LE SYSTEME SE REVELE PARTICULIEREMENT ROBUSTE DANS LA SEGMENTATION D'IMAGES FLOUES OU TRES BRUITEES ET SE DESTINE AUX CONTROLES INDUSTRIELS DANS DES CONDITIONS DIFFICILES ET A CADENCE ELEVEE. NOUS PROPOSONS AUSSI UNE METHODE DE COMBINAISON SIMPLE ET EFFICACE DES INFORMATIONS MULTIECHELLES DE CONTOURS. NOUS MONTRONS QUE LES APPROCHES ASCENDANTES OU DESCENDANTES UTILISEES DANS LES TRAVAUX EXISTANTS SONT RESTRICTIVES. UNE GRANDE VARIETE DE METHODES DE SEGMENTATION PEUT ETRE GREFFEE SUR CETTE METHODE DE FUSION

Download or read book Intelligent Robots and Computer Vision written by and published by . This book was released on 1998 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book DETECTION DE CONTOURS PAR TRANSFORMEE EN ONDELETTES ET RESEAUX DE NEURONES written by MARTIAL.. FORTHOFFER and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: LE MEMOIRE PRESENTE TRAITE DE LA SEGMENTATION D'IMAGES PAR DETECTION DE CONTOURS PAR LA COOPERATION DE LA TRANSFORMEE EN ONDELETTES ET DES RESEAUX DE NEURONES. LE CHAPITRE I INTRODUIT LES DIFFERENTES METHODES DE SEGMENTATION D'IMAGES EN INSISTANT SUR LA DETECTION DE CONTOURS. LA TRANSFORMEE EN ONDELETTES PRESENTEE DANS LE CHAPITRE II EFFECTUE UNE ANALYSE MULTIRESOLUTION ET PERMET D'EXPRIMER LES CONTOURS COMME LES INFORMATIONS PERDUES LORS D'UNE APPROXIMATION DU SIGNAL SUR DES FACTEURS DE RESOLUTIONS DYADIQUES. DANS LE CHAPITRE III, NOUS PROPOSONS UNE NOUVELLE METHODE DE DETECTION DE CONTOURS EFFECTUEE A PARTIR DE COMBINAISONS MULTIRESOLUTION PONDEREES PAR UNE ESTIMATION LOCALE DU BRUIT. LE RESULTAT EST GENERALEMENT PEU SENSIBLE AU BRUIT, MAIS CERTAINES INFORMATIONS TELLES QUE LES CONTOURS EN FORME DE TOIT SONT SUPPRIMEES. LE CHAPITRE IV DETAILLE LES DIFFERENTES BASES D'ONDELETTES CONSTRUITES SUR DES FILTRES DE TYPE GRADIENT OU LAPLACIEN. LES LIMITES IMPOSEES PAR LA TRANSFORMEE EN ONDELETTES INDUISENT L'UTILISATION D'UNE VERSION BI-ORTHOGONALE QUI AUTORISE L'UTILISATION DE FILTRES OPTIMAUX AU SENS DE CANNY. LA DIFFICULTE A DETERMINER UNE METHODE ANALYTIQUE DE RECOMBINAISON MULTIRESOLUTION NOUS CONDUIT DANS LE CHAPITRE V A SOUMETTRE CETTE TACHE A UN RESEAU DE NEURONES. LE RESEAU IDENTIFIE LES LIENS EXISTANT ENTRE LES CONTOURS REELS ET LEUR CONTRIBUTION DANS LES DIFFERENTES RESOLUTIONS DE L'IMAGE, EN FONCTION D'UNE REFERENCE DETERMINEE PAR EXPERT. POUR DES APPLICATIONS EXIGEANT UNE GRANDE VITESSE DE CALCUL, SON INTEGRATION AVEC LA TRANSFORMEE EN ONDELETTES (ALGORITHME TEMPS REEL) EST ENVISAGEE

Download or read book Contribution la description des formes par la transform e en ondelettes written by Kimcheng Kith and published by . This book was released on 2005 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse s'intéresse aux systèmes de reconnaissance des objets 2D par le contour, le but est de rechercher les objets (contours) les plus similaires à un objet (contour) requête fourni en exemple. Pour cela, il est d'abord nécessaire de décrire les contours d'objet stockés dans la base. L'objectif est de traduire la similarité visuelle entre les contours en une simple notion de proximité spatiale entre descripteurs. Ainsi, pour retrouver les contours similaires au contour requête, il suffit de retrouver les descripteurs les plus proches du descripteur du contour requête. Un des problèmes fondamentaux du système de reconnaissance de forme réside dans le choix de la description invariante de contour. En effet, on estime que les objets retrouvés par le système correspondent rarement exactement à la requête, des transformations similitudes ou affines peuvent les séparer. C'est pourquoi la description du contour doit posséder de bonne propriétés d'invariance afin de conférer de la robustesse au système de reconnaissance. La première partie de cette thèse concerne l'étude des outils mathématiques les plus utilisés dans le cadre du système de reconnaissance de forme tels que les descripteurs par les Moments, les descripteurs de Fourier, les descripteurs utilisant la courbure multi-échelle etc. La seconde partie de ce travail est consacré à l'étude de la théorie de la transformation en ondelette qui nous a permis de proposer deux nouveaux descripteurs qui ont été évalués et comparés en utilisant la base CE-1 MPEG7, les résultats de ces évaluations et comparaisons ont montré que ces deux descripteurs sont robustes au même titre que les meilleurs descripteurs actuels avec des avantages au niveau de la complexité et du choix des noyaux d'ondelettes en fonction des applications.

Download or read book Wavelets and Their Applications written by J.S. Byrnes and published by Springer Science & Business Media. This book was released on 1994-08-31 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is probably true quite generally that in the history of human thinking the most fruitful developments frequently take place at those points where two different lines of thought meet. Hence, if they actually meet, that is, if they are at least so much related to each other that a real interaction can take place, then one may hope that new and interesting developments may follow. Werner Heisenberg This volume contains papers presented at the August 1992 NATO Advanced Study Institute on Wavelets and Their Applications. The conference was held at the beautiful Il Ciocco resort near Lucca, in the glorious Tuscany region of northern Italy. Once again we gathered at this idyllic spot to explore and extend the reciprocity between mathematics and engineering. The dynamic interaction between world-renowned scientists from the usu ally disparate communities of pure mathematicians and applied scientists, which occurred at our 1989 and 1991 ASI's, continued at this meeting. Wavelet theory and technology is in an important growth stage at which theoretical and practical results are being compared with existing methods. There have been spectacular wavelet successes and sobering comparisons with traditional ideas-but still there is a wide expanse of scientific problems to explore. Since these problems lie at the forefront of both pure mathematics and applied science, our NATO ASI was especially pertinent at this time.

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 Sustainable Water Resources Planning and Management Under Climate Change written by Elpida Kolokytha and published by Springer. This book was released on 2016-10-18 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses different aspects of water resources, ranging from hydrology and modeling to management and policy responses. Climate changes and the uncertainty of future hydrological regimes make sustainable water resources management a difficult task, requiring a set of approaches that address climate variability and change. The book focuses on three main themes: hydrological changes, adaptive decision-making for water resources, and institutional analysis and risk management. It discusses the applications and limitations of climate change models and scenarios related to precipitation projection, which predicts to the future availability of water. It also offers interesting examples from around the globe to describe the policy options for dealing with climate change. Addressing emerging issues that need to be resolved and techniques that can be applied for sustainable climate-change-sensitive water resources protection and management, this practical, state-of-the-art reference book is a valuable resource for researchers, students and professionals interested in sustainable water resources management in a changing climate.

Download or read book A Review of Point Cloud Registration Algorithms for Mobile Robotics written by Francois Pomerleau and published by . This book was released on 2015-05-27 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deals with the topic of geometric registration in robotics. It provides a historical perspective of the registration problem and shows that the various solutions available can be organized and differentiated in a framework according to a few elements. It also reviews a few applications of this framework in mobile robotics.

Download or read book Geosimulation written by Itzhak Benenson and published by John Wiley & Sons. This book was released on 2004-08-20 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Terrestrial Water Cycle and Climate Change written by Qiuhong Tang and published by John Wiley & Sons. This book was released on 2016-07-25 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Terrestrial Water Cycle: Natural and Human-Induced Changes is a comprehensive volume that investigates the changes in the terrestrial water cycle and the natural and anthropogenic factors that cause these changes. This volume brings together recent progress and achievements in large-scale hydrological observations and numerical simulations, specifically in areas such as in situ measurement network, satellite remote sensing and hydrological modeling. Our goal is to extend and deepen our understanding of the changes in the terrestrial water cycle and to shed light on the mechanisms of the changes and their consequences in water resources and human well-being in the context of global change. Volume highlights include: Overview of the changes in the terrestrial water cycle Human alterations of the terrestrial water cycle Recent advances in hydrological measurement and observation Integrated modeling of the terrestrial water cycle The Terrestrial Water Cycle: Natural and Human-Induced Changes will be a valuable resource for students and professionals in the fields of hydrology, water resources, climate change, ecology, geophysics, and geographic sciences. The book will also be attractive to those who have general interests in the terrestrial water cycle, including how and why the cycle changes.

Download or read book 2020 IEEE 18th International Conference on Industrial Informatics INDIN written by IEEE Staff and published by . This book was released on 2020-07-20 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: INDIN focuses on recent developments, deployments, technology trends, and research results in Industrial Informatics related fields from both industry and academia

Download or read book Fundamentals of Statistical Hydrology written by Mauro Naghettini and published by Springer. This book was released on 2016-10-26 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook covers the main applications of statistical methods in hydrology. It is written for upper undergraduate and graduate students but can be used as a helpful guide for hydrologists, geographers, meteorologists and engineers. The book is very useful for teaching, as it covers the main topics of the subject and contains many worked out examples and proposed exercises. Starting from simple notions of the essential graphical examination of hydrological data, the book gives a complete account of the role that probability considerations must play during modelling, diagnosis of model fit, prediction and evaluating the uncertainty in model predictions, including the essence of Bayesian application in hydrology and statistical methods under nonstationarity. The book also offers a comprehensive and useful discussion on subjective topics, such as the selection of probability distributions suitable for hydrological variables. On a practical level, it explains MS Excel charting and computing capabilities, demonstrates the use of Winbugs free software to solve Monte Carlo Markov Chain (MCMC) simulations, and gives examples of free R code to solve nonstationary models with nonlinear link functions with climate covariates.

Download or read book Eye Movements written by Roger PG van Gompel and published by Elsevier. This book was released on 2007-03-27 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eye-movement recording has become the method of choice in a wide variety of disciplines investigating how the mind and brain work. This volume brings together recent, high-quality eye-movement research from many different disciplines and, in doing so, presents a comprehensive overview of the state-of-the-art in eye-movement research. Sections include the history of eye-movement research, physiological and clinical studies of eye movements, transsaccadic integration, computational modelling of eye movements, reading, spoken language processing, attention and scene perception, and eye-movements in natural environments. - Includes recent research from a variety of disciplines - Divided into sections based on topic areas, with an overview chapter beginning each section - Through the study of eye movements we can learn about the human mind, and eye movement recording has become the method of choice in many disciplines

Download or read book Virtual Geographic Environments written by Hui Lin and published by ESRI Press. This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Virtual Geographic Environments, edited by Hui Lin and Michael Batty, collects key papers that define the current momentum in GIS and "virtual geographies." Contributions by leading members of the geospatial community to Virtual Geographic Environments illustrate the cutting edge of GIScience, as well as new applications of GIS with the processing and delivery of geographic information through the Web and handheld devices, forming two major directions to these developments. The four-part organization leads from a primer on VGEs to virtual cities and landscapes, interface design and public participation, and finally mobile and networked VGEs. Current topics, such as crowd sourcing and related services, point to the development of new business models that merge proprietary and nonproprietary systems.

Download or read book Operator Algebras Toeplitz Operators and Related Topics written by Wolfram Bauer and published by Birkhäuser. This book was released on 2021-09-02 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book features a collection of up-to-date research papers that study various aspects of general operator algebra theory and concrete classes of operators, including a range of applications. Most of the papers included were presented at the International Workshop on Operator Algebras, Toeplitz Operators, and Related Topics, in Boca del Rio, Veracruz, Mexico, in November 2018. The conference, which was attended by more than 30 leading experts in the field, was held in celebration of Nikolai Vasilevski’s 70th birthday, and the contributions are dedicated to him.

Download or read book 2021 International Conference on Information Science and Communications Technologies ICISCT written by IEEE Staff and published by . This book was released on 2021-11-03 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Information Science and Communications Technologies ICISCT 2021 invites high quality recent research results in the areas of Home and Health networking, Electronic commerce, Mobility and Mobile Payment, Broadband access, satellite services, 5G in rural communications, cloud computing, Smart grids, Big data analysis, Cyber security, Internet of Things IOT, Mobile and Wireless Communications, optical communications and networking, architectures, protocols, planning and design, management and operation, simulation and performance modeling ICISCT2021 conference is the application of the next generation of information and communications technologies on Education, Tele medicine, Finance and Economy Photonic devices and integration, Optoelectronic integration including devices and materials, Optical networks and transmission systems, Novel fibers and fiber based devices, Transmission systems and networks Photonics sensors and sensor networks, Microwave photonics

Download or read book 2021 IEEE International Joint EMC SI PI and EMC Europe Symposium written by IEEE Staff and published by . This book was released on 2021-07-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: All aspects or EMC, Signal and Power integrity