Author: DUFOUR Jean-Yves Publisher: Lavoisier ISBN: 2746288907 Category : Languages : en Pages : 386
Book Description
L’utilisation croissante de la vidéoprotection rend nécessaire la mise en place de fonctions d’analyse vidéo pour alléger voire automatiser des tâches aujourd’hui entièrement réalisées par des opérateurs. Après avoir dressé un panorama des avancées et des perspectives en analyse d’image, cet ouvrage détaille les principales fonctions d’analyse vidéo, comme la détection, le suivi et la reconnaissance d’objets d’intérêt (personnes ou véhicules) ou les fonctions de « haut-niveau » visant à interpréter les scènes observées (évènements, comportements, nature de la scène...). Les besoins sont illustrés sous l’angle de deux applications majeures, la sécurité des transports et l’investigation. Les contraintes d’ordres juridique et éthique sont présentées, ainsi que les caractéristiques des données vidéo traitées, au travers des caméras et des méthodes de compression utilisées. La problématique de l’évaluation de performance, tant au niveau opérationnel qu’au niveau des fonctions d’analyse, est également exposée.
Author: YAN HUA.. DONG Publisher: ISBN: Category : Languages : fr Pages : 208
Book Description
LE CONVERTISSEUR AN A UNE RESOLUTION DE 8 BITS ET UN DEBIT DE CONVERSION DE 20 MHZ. L'UTILISATION DE LA TECHNOLOGIE CMOS PERMET UNE GRANDE DENSITE D'INTEGRATION POUR UN FAIBLE COUT DE FABRICATION. POUR SA REALISATION UN NOUVEAU COMPARATEUR A ETE ETUDIE ET MIS AU POINT, PEU SENSIBLE A LA VARIATION DE TENSION DE SEUIL DES TRANSISTORS. TOUS LES COMPARATEURS INTEGRES SUR UN MEME CIRCUIT ONT AINSI DES CARACTERISTIQUES IDENTIQUES; CECI PERMET D'OBTENIR UNE GRANDE PRECISION POUR LE CAN. POUR ELIMINER LE MAXIMUM D'ERREURS DE CONVERSION, ON INSERE DANS LE CAN DES ELEMENTS DE DETECTION ET DE CORRECTION D'ERREURS EVENTUELLES. LE CORRECTEUR EST BASE SUR UNE FONCTION A MAJORITE
Author: Alexander V. Sergienko Publisher: CRC Press ISBN: 1420026607 Category : Science Languages : en Pages : 248
Book Description
All current methods of secure communication such as public-key cryptography can eventually be broken by faster computing. At the interface of physics and computer science lies a powerful solution for secure communications: quantum cryptography. Because eavesdropping changes the physical nature of the information, users in a quantum exchange can easily detect eavesdroppers. This allows for totally secure random key distribution, a central requirement for use of the one-time pad. Since the one-time pad is theoretically proven to be undecipherable, quantum cryptography is the key to perfect secrecy. Quantum Communications and Cryptography is the first comprehensive review of the past, present, and potential developments in this dynamic field. Leading expert contributors from around the world discuss the scientific foundations, experimental and theoretical developments, and cutting-edge technical and engineering advances in quantum communications and cryptography. The book describes the engineering principles and practical implementations in a real-world metropolitan network as well as physical principles and experimental results of such technologies as entanglement swapping and quantum teleportation. It also offers the first detailed treatment of quantum information processing with continuous variables. Technologies include both free-space and fiber-based communications systems along with the necessary protocols and information processing approaches. Bridging the gap between physics and engineering, Quantum Communications and Cryptography supplies a springboard for further developments and breakthroughs in this rapidly growing area.
Author: Xavier Begaud Publisher: John Wiley & Sons ISBN: 1118586573 Category : Technology & Engineering Languages : en Pages : 217
Book Description
Ultra Wide Band Technology (UWB) has reached a level of maturity that allows us to offer wireless links with either high or low data rates. These wireless links are frequently associated with a location capability for which ultimate accuracy varies with the inverse of the frequency bandwidth. Using time or frequency domain waveforms, they are currently the subject of international standards facilitating their commercial implementation. Drawing up a complete state of the art, Ultra Wide Band Antennas is aimed at students, engineers and researchers and presents a summary of internationally recognized studies.
Author: Alain Sibille Publisher: Academic Press ISBN: 0123821959 Category : Technology & Engineering Languages : es Pages : 385
Book Description
Foreword from Arogyaswami Paulraj, Professor (Emeritus), Stanford University (USA) - The first book to show how MIMO principles can be implemented in today's mobile broadband networks and components - Explains and solves some of the practical difficulties that arise in designing and implementing MIMO systems - Both theory and implementation sections are written in the context of the most recent standards: IEEE 802.11n (WiFi); IEEE 802.16 (WIMAX); 4G networks (3GPP/3GPP2, LTE)
Author: Roberto Verdone Publisher: Springer Science & Business Media ISBN: 144712314X Category : Computers Languages : en Pages : 696
Book Description
Reporting the findings of COST 2100, a major European intergovernmental project, this volume offers system designers a good source of guidelines based on channel characterization and measurement-based modeling, as well as worthwhile ideas for future research.
Author: Jean-Louis Boulanger Publisher: John Wiley & Sons ISBN: 1119002923 Category : Computers Languages : en Pages : 342
Book Description
This book presents real-world examples of formal techniques in an industrial context. It covers formal methods such as SCADE and/or the B Method, in various fields such as railways, aeronautics, and the automotive industry. The purpose of this book is to present a summary of experience on the use of “formal methods” (based on formal techniques such as proof, abstract interpretation and model-checking) in industrial examples of complex systems, based on the experience of people currently involved in the creation and assessment of safety critical system software. The involvement of people from within the industry allows the authors to avoid the usual confidentiality problems which can arise and thus enables them to supply new useful information (photos, architecture plans, real examples, etc.).
Author: DUFOUR Jean-Yves
Author: YAN HUA.. DONG
Author: 
Author: Alexander V. Sergienko
Author: Xavier Begaud
Author: Alain Sibille
Author: Lora L. Dumont
Author: Roberto Verdone
Author: Chevalier François Le
Author: Jean-Louis Boulanger