Download or read book Architectures cellulaires pour la synth se d images written by Abdelghani Atamenia and published by . This book was released on 1989 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exploitation du parallélisme massif pour la synthèse d'images, en particulier sous la forme de réseaux cellulaires. Dans un premier volet, nous présentons la simulation d'une architecture multiprocesseur respectant les contraintes des réseaux cellulaires. Dans un deuxième volet, nous proposons une architecture cellulaire multipipeline orientée pixel, pour le rendu par la méthode de Gouraud, de scènes polygonales et son extension au lancer de rayon. Cette nouvelle architecture est évaluée en termes de complexité et de performances

Download or read book Algorithmes parall les et architecture cellulaires pour la synth se d images written by Eric Lepretre and published by . This book was released on 1989 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Architectures cellulaires pour la synthese d images written by Abdelghani Atamenia and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Algorithmes parall les et architectures cellulaires pour la synth se d images written by Eric Leprêtre and published by . This book was released on 1989 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Définition des meilleures solutions architecturales fondées sur la parallélisation des algorithmes de base de la synthèse d'images (trace de segments, trace de cercles, remplissage,...). pour chacun des problèmes de base, une dizaine d'algorithmes parallèles sont développés conduisant à six architectures différentes. Leurs performances relatives sont alors comparées afin de retenir les meilleures d'entre elles

Download or read book Advances in Computer Graphics Hardware V written by Richard L. Grimsdale and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains papers representing a comprehensive record of the contributions to the fifth workshop at EG '90 in Lausanne. The Eurographics hardware workshops have now become an established forum for the exchange of information about the latest developments in this field of growing importance. The first workshop took place during EG '86 in Lisbon. All participants considered this to be a very rewarding event to be repeated at future EG conferences. This view was reinforced at the EG '87 Hardware Workshop in Amsterdam and firmly established the need for such a colloquium in this specialist area within the annual EG conference. The third EG Hardware Workshop took place in Nice in 1988 and the fourth in Hamburg at EG '89. The first part of the book is devoted to rendering machines. The papers in this part address techniques for accelerating the rendering of images and efficient ways of improv ing their quality. The second part on ray tracing describes algorithms and architectures for producing photorealistic images, with emphasis on ways of reducing the time for this computationally intensive task. The third part on visualization systems covers a num ber of topics, including voxel-based systems, radiosity, animation and special rendering techniques. The contributions show that there is flourishing activity in the development of new algorithmic and architectural ideas and, in particular, in absorbing the impact of VLSI technology. The increasing diversity of applications encourage new solutions, and graphics hardware has become a research area of high activity and importance.

Download or read book Algorithmes et architectures cellulaires pour le traitement d images written by Patricia Planet and published by . This book was released on 1994 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA COMMUNICATION VISUELLE EST EN PLEINE EXPANSION, L'AVENEMENT DU MULTIMEDIA ET SES BESOINS EN IMAGES DYNAMISENT FORTEMENT LA RECHERCHE DANS LES DOMAINES DU CODAGE ET DE LA COMPRESSION D'IMAGES. IL SEMBLE QUE LES CODEURS A FORT TAUX DE COMPRESSION SERONT BASES SUR DES TECHNIQUES DE CODAGE PAR MODELES. IL S'AGIT A CE NIVEAU ESSENTIELLEMENT D'ANALYSE ET DE SYNTHESE D'IMAGES. CEPENDANT TOUTE ANALYSE D'IMAGES DEPEND DE PRIMITIVES UTILISANT LES CARACTERISTIQUES OBTENUES PAR DES TRAITEMENTS D'IMAGES DITS DE BAS-NIVEAUX (ALGORITHMES TRAVAILLANT SUR LES DONNEES AU NIVEAU PIXEL). UNE PREMIERE PARTIE DE CE TRAVAIL EST CONSACREE A L'ETUDE D'ALGORITHMES CELLULAIRES EN GENERAL. CES ALGORITHMES PRESENTENT AINSI UNE FORTE CAPACITE A LA PARALLELISATION ET AUX REALISATIONS VLSI. LES ALGORITHMES CELLULAIRES ITERATIFS DANS LE DOMAINE DU TRAITEMENT D'IMAGES SONT PLUS PRECISEMENT ETUDIES. LA SECONDE PARTIE ILLUSTRE PAR TROIS APPLICATIONS DANS L'ETUDE DU MOUVEMENT (DETECTION DE MOUVEMENT, SEGMENTATION SPATIO-TEMPORELLE ET ESTIMATION DE MOUVEMENT PAR LE FLOT OPTIQUE) DES POSSIBILITES DES ALGORITHMES CELLULAIRES ET ITERATIFS. LA TROISIEME PARTIE DE CE TRAVAIL EST ORIENTEE ARCHITECTURES. UNE ARCHITECTURE GENERIQUE AUX ALGORITHMES CELLULAIRES ITERATIFS EST ETUDIEE. LE MODE ASYNCHRONE D'UNE TELLE ARCHITECTURE EST PLUS PARTICULIEREMENT DEVELOPPE. LES AVANTAGES TECHNOLOGIQUES DE L'ASYNCHRONISME NE SONT PLUS A DEMONTRER, PAR CONTRE LE COMPORTEMENT DES ALGORITHMES DANS UN TEL CONTEXTE N'EST PAS TOUJOURS EVIDENT ET NOUS MONTRONS QUE MOYENNANT LE DEVELOPPEMENT D'UNE ARCHITECTURE A DEUX NIVEAUX IL NOUS EST POSSIBLE DE CONTROLER LA CONVERGENCE D'ALGORITHMES DE RELAXATION OU CELLE-CI N'EST DEMONTREE THEORIQUEMENT NI DANS LE MODE SYNCHRONE NI DANS LE MODE ASYNCHRONE

Download or read book Technique Et Science Informatiques written by and published by . This book was released on 1991 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Architectures des syst mes pour la synth se d images written by Christophe Chaillou and published by . This book was released on 1992 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synth se d images l aide d automates cellulaires written by Jean-Yves Martin and published by . This book was released on 1990 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES AUTOMATES CELLULAIRES PERMETTENT DE CONSTRUIRE, DE FACON RELATIVEMENT SIMPLE, UNE MULTITUDE D'IMAGES. LA CREATION DE CES IMAGES PASSE PAR LA DEFINITION D'UN CERTAIN NOMBRE DE PARAMETRES: NOMBRE D'ETATS, VOISINAGE, FONCTION DE TRANSITION. LORSQUE NOUS DONNONS DES VALEURS AU HASARD A CES PARAMETRES, IL EST DIFFICILE DE PREVOIR CE QUI SERA AFFICHE. NOUS AVONS ABORDE LES AUTOMATES CELLULAIRES SOUS UNE NOUVELLE OPTIQUE: LA MODELISATION DECLARATIVE. GRACE A CETTE METHODOLOGIE, LE CONCEPTEUR N'A PLUS QU'A DECRIRE L'IMAGE QU'IL VEUT. LES PARAMETRES A DETERMINER SONT PRIS EN COMPTE PAR L'ORDINATEUR QUI ENGENDRE ALORS UNE OU DES IMAGE(S) RESPECTANT LA DESCRIPTION FOURNIE. POUR METTRE EN PLACE CETTE METHODOLOGIE, NOUS AVONS DEFINI DES OUTILS DE DESCRIPTION (PERMETTANT AU CONCEPTEUR DE DETERMINER CE QU'IL VEUT), DES TECHNIQUES D'EXPLORATION DE L'UNIVERS DES AUTOMATES CELLULAIRES (QUI PERMETTENT DE SELECTIONNER LES FONCTIONS DE TRANSITION INTERESSANTES), ET UN ENSEMBLE DE THEOREMES (PERMETTANT DE FAIRE DES DEDUCTIONS SUR D'AUTRES FONCTIONS DE TRANSITION). CES ELEMENTS NOUS PERMETTENT AINSI DE CREER DES IMAGES SANS AVOIR A NOUS PREOCCUPER DES PARAMETRES A FOURNIR

Download or read book Architectures mat rielles pour la synth se d image par lancer de rayon written by Stéphane Mancini (enseignant-chercheur en électronique).) and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conception d une cellule de calculs arithm tiques pour la synth se d image written by Franck Rousée and published by . This book was released on 1990 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: NOUS PRESENTONS L'ARCHITECTURE D'UN PROCESSEUR CELLULAIRE POUR LE CALCUL EN ARITHMETIQUE FLOTTANTE, PCS SPECIALISE POUR LA SYNTHESE D'IMAGE. LA MISE EN PARALLELE DE PLUSIEURS CELLULES PCS PERMET DE REALISER DIFFERENTS TYPES DE MACHINES OU DE COPROCESSEURS SUPPORTANT LES ALGORITHMES POUR LA SYNTHESE D'IMAGE. L'ARCHITECTURE TRES REGULIERE DE CETTE CELLULE EN FACILITE SON INTEGRATION VLSI. QUELQUES EXEMPLES D'UTILISATION EN SYNTHESE D'IMAGE DE CETTE CELLULE COMME PROCESSEUR POUR LES OPERATIONS GEOMETRIQUES SONT EGALEMENT PRESENTES. UN PROTOTYPE DE LA CELLULE PCS A ETE REALISE PAR LA SOCIETE SOGITEC

Download or read book La synth se d images written by Jean-Pierre Couwenbergh and published by . This book was released on 1998 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Architecture, médecine, publicité, cinéma, jeux, vidéo ... Tous ces secteurs d'activité utilisent les images de synthèse. Pour en découvrir les multiples facettes, cet ouvrage s'attache à en décrire les concepts généraux et les différentes étapes de fabrication.

Download or read book Lindenmayer Systems Fractals and Plants written by Przemyslaw Prusinkiewicz and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1-systems are a mathematical formalism which was proposed by Aristid 1indenmayer in 1968 as a foundation for an axiomatic theory of develop ment. The notion promptly attracted the attention of computer scientists, who investigated 1-systems from the viewpoint of formal language theory. This theoretical line of research was pursued very actively in the seventies, resulting in over one thousand publications. A different research direction was taken in 1984 by Alvy Ray Smith, who proposed 1-systems as a tool for synthesizing realistic images of plants and pointed out the relationship between 1-systems and the concept of fractals introduced by Benoit Mandel brot. The work by Smith inspired our studies of the application of 1-systems to computer graphics. Originally, we were interested in two problems: • Can 1-systems be used as a realistic model of plant species found in nature? • Can 1-systems be applied to generate images of a wide class of fractals? It turned out that both questions had affirmative answers. Subsequently we found that 1-systems could be applied to other areas, such as the generation of tilings, reproduction of a geometric art form from East India, and synthesis of musical scores based on an interpretation of fractals. This book collects our results related to the graphical applications of- systems. It is a corrected version of the notes which we prepared for the ACM SIGGRAPH '88 course on fractals.

Download or read book Annales des t l communications written by and published by . This book was released on 1998 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book T A written by and published by . This book was released on 1954 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1998 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Algorithmic Beauty of Plants written by Przemyslaw Prusinkiewicz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now available in an affordable softcover edition, this classic in Springer's acclaimed Virtual Laboratory series is the first comprehensive account of the computer simulation of plant development. 150 illustrations, one third of them in colour, vividly demonstrate the spectacular results of the algorithms used to model plant shapes and developmental processes. The latest in computer-generated images allow us to look at plants growing, self-replicating, responding to external factors and even mutating, without becoming entangled in the underlying mathematical formulae involved. The authors place particular emphasis on Lindenmayer systems - a notion conceived by one of the authors, Aristid Lindenmayer, and internationally recognised for its exceptional elegance in modelling biological phenomena. Nonetheless, the two authors take great care to present a survey of alternative methods for plant modelling.