Download or read book Trajectographie sous marine par analyse de sequences d images video written by Francisco Aguirre Medina and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Trajectographie sous marine par analyse de s quences d images vid o written by Université de Bretagne occidentale and published by . This book was released on 1990 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Trajectographie sous marine par analyse de s quences d images vid o written by Francisco Aguirre and published by . This book was released on 1990 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE THESE DECRIT UNE METHODE POUR CALCULER LA TRAJECTOIRE D'UN SOUS-MARIN A PARTIR D'IMAGES DU FOND MARIN FOURNIES PAR UNE CAMERA VIDEO. NOTRE APPROCHE POUR IDENTIFIER LE MOUVEMENT DANS LA SEQUENCE EST D'ETABLIR DES CORRESPONDANCES ENTRE UN ENSEMBLE DE POINTS, APPELES TRACEURS, DEUX IMAGES SUCCESSIVES GRACE A UNE TRANSFORMEE DE HOUGH GENERALISEE. LA DETECTION DES TRACEURS EST FAITE AVEC UN DETECTEUR DE CONTOUR PAR SOBEL. L'EXTRACTION DES TRACEURS EST ACCOMPLIE EN UTILISANT UN SEUIL VARIABLE DE BINARISATION, CETTE PROCEDURE RETIENT 10% DES POINTS APPARTENANT AUX ELEMENTS DU CONTOUR. CINQ TRACEURS SONT SELECTIONNES. LA TRANSFORMEE DE HOUGH GENERALISEE THG EST ENSUITE APPLIQUEE POUR ETABLIR LA CORRESPONDANCE ENTRE POINTS DE DEUX TRACEURS SUCCESSIFS. LE DEPLACEMENT EN TRANSLATION EST OBTENU POUR CHAQUE TRACEUR EN DETECTANT LE PIC DE CHAQUE MATRICE D'ACCUMULATION. DE PLUS UN FACTEUR DE CONFIANCE POUR L'ESTIMATION EST CALCULE QUI DEPEND DE L'AMPLITUDE DU PIC ET DU NOMBRE DE POINTS DE CONTOURS UTILISE DANS LA THG ET QUI PERMET DE PONDERER L'ESTIMATION AFIN DE LA RENDRE PLUS ROBUSTE. LE FILTRE DE KALMAN UTILISE PERMET DE CONNAITRE LA TRAJECTOIRE QUAND AUCUN TRACEUR NE PEUT ETRE TROUVE DANS L'IMAGE ET DE PREDIRE LES PARAMETRES DU MOUVEMENT CE QUI PEUT ETRE UTILISE A LA THG. DES SIMULATIONS ONT ETE FAITES SUR DES SEQUENCES D'IMAGES REELLES FOURNIES PAR IFREMER. LA PREMIERE EST UNE SEQUENCE D'EPAVE (250 IMAGES). LA SECONDE EST UNE SEQUENCE DE SABLE ET DE ROCHES (100 IMAGES). DANS LES DEUX SEQUENCES LA TRAJECTOIRE A PU ETRE OBTENUE AVEC SUFFISAMMENT DE PRECISION

Download or read book Determination Spatio temporelle de Traceurs Dans Une Sequence D images Sous marines a Des Fins de Trajectographie written by Institut National de Recherche en Informatique et en Automatique and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dtermination spatio temporelle de traceurs dans une sequence d images sous marines a des fins de trajectographie written by P. Lalande and published by . This book was released on 1988 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Determination Spatio temporelle de Traceurs Dans Une Sequence D images Sous marines a Des Fins de Trajectographie written by P. Lalande and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book StarBriefs 2001 written by André Heck and published by Springer. This book was released on 2000-11-01 with total page 813 pages. Available in PDF, EPUB and Kindle. Book excerpt: When working in the highly technical fields of astronomy and the related space sciences, the practitioner is constantly confronted with a baffling array of different abbreviations, acronyms, contractions, and symbols. The identification and differentiation of these terms is a task which, all too often, can prove to be a near impossible one. With over 140,000 separate dictionary-style entries, and over 20 years in collation, StarBriefs 2001 represents the most comprehensive and accurately validated collection of abbreviations, acronyms, contractions, and symbols within astronomy, related space sciences and other related fields. As such, this invaluable reference source (and its companion volume, StarGuides 2001 should be on the reference shelf of every library, organisation or individual with any interest in these areas. Besides astronomy and space sciences, related fields such as aeronautics, aeronomy, astronautics, atmospheric sciences, chemistry, communications, computer sciences, data processing, education, electronics, engineering, energetics, environmental, geodesy, geophysics, information handling, management, mathematics, meteorology, optics, physics, remote sensing, and so on, are also covered when justified. In addition, there are separate sections devoted to Greek letters, mathematical symbols, special signs and characters, as well as to entries with a numerical prefix. Finally, terms in common use and/or of general interest have also been included where appropriate.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1988 with total page 1590 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.

Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1988 with total page 1600 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific Computing in Chemical Engineering written by Frerich Keil and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific Computing in Chemical Engineering gives the state of the art from the point of view of the numerical mathematicians as well as from the engineers. The application of modern methods in numerical mathematics on problems in chemical engineering, especially reactor modeling, process simulation, process optimization and the use of parallel computing is detailed.

Download or read book Social Change and Sustainable Transport written by William Richard Black and published by Indiana University Press. This book was released on 2002-11-29 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transportation research has traditionally been dominated by engineering and logistics research approaches. This book integrates social, economic, and behavioral sciences into the transportation field. As its title indicates, emphasis is on socioeconomic changes, which increasingly govern the development of the transportation sector. The papers presented here originated at a conference on Social Change and Sustainable Transport held at the University of California at Berkeley in March 1999, under the auspices of the European Science Foundation and the National Science Foundation. The contributors, who represent a range of disciplines, including geography and regional science, economics, political science, sociology, and psychology, come from twelve different countries. Their subjects cover the consequences of environmentally sustainable transportation vs. the "business-as-usual" status quo, the new phenomenon of "edge cities," automobile dependence as a social problem, the influence of leisure or discretionary travel and of company cars, the problems of freight transport, the future of railroads in Europe, the imposition of electronic road tolls, potential transport benefits of e-commerce, and the electric car.