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Your search keyword '"Gesquiere, G."' showing total 15 results
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15 results on '"Gesquiere, G."'

2. Change Detection of Cities

Author

Pédrinis, F., Morel, M., Gesquière, G., Cartwright, William, Series editor, Gartner, Georg, Series editor, Meng, Liqiu, Series editor, Peterson, Michael P, Series editor, Breunig, Martin, editor, Al-Doori, Mulhim, editor, Butwilowski, Edgar, editor, Kuper, Paul V., editor, Benner, Joachim, editor, and Haefele, Karl Heinz, editor

Published
2015
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4. An Efficient Data-Hiding Method Based on Lossless JPEG2000 for a Scalable and Synchronized Visualization of 3D Terrains

Author

Khizar Hayat, Puech, W., Gesquiere, G., Puech, William, Image & Interaction (ICAR), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Laboratoire des Sciences de l'Information et des Systèmes (LSIS), Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Paristech ENSAM Aix-en-Provence-Université de Toulon (UTLN)-Aix Marseille Université (AMU), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), and Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Arts et Métiers Paristech ENSAM Aix-en-Provence-Centre National de la Recherche Scientifique (CNRS)

Subjects
[INFO.INFO-TI] Computer Science [cs]/Image Processing [eess.IV], [INFO.INFO-TI]Computer Science [cs]/Image Processing [eess.IV], ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
Abstract

International audience; Real-time on-line 3D visualization of terrain is a memory intensive process accompanied by considerably large data transfer across the network and thus data compression is inevitable. The upcoming standard of JPEG2000 is well suited for such network based transfers since it offers the additional advantage of resolution scalability resulting in incremental improvement of quality. The 3D visualization process is, essentially, the linking of the texture image with the terrain geometry obtained from DEM; the data are heterogeneous and normally involves more than one file. This work is concerned with the interleaving of these files into one jp2 file in a synchronized way so that the file format is conserved for compliance to the JPEG2000 standard. This synchronization is achieved by using a scalable data hiding method to embed the lossless wavelet transformed DEM in the corresponding lossless JPEG2000 coded texture. For the DEM and the texture, the level of transform is the same. With this approach the 3D visualization is efficient even if a small fraction of the initial data is transmitted.

Published
2007
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15. Deformation exchange between adjacent physical code geometries

Author

Duplex, B., Gesquiere, G., Daniel, M., Fabien Perdu, Laboratoire des Sciences de l'Information et des Systèmes (LSIS), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Arts et Métiers Paristech ENSAM Aix-en-Provence-Centre National de la Recherche Scientifique (CNRS), Département Etude des Réacteurs (DER), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Paristech ENSAM Aix-en-Provence-Université de Toulon (UTLN)-Aix Marseille Université (AMU), Skala, Václav, and Daniel, Marc

Subjects
[INFO.INFO-OH] Computer Science [cs]/Other [cs.OH], CS-RBF, geometric deformations, physical code coupling, [INFO.INFO-OH]Computer Science [cs]/Other [cs.OH], geometrické deformace, vazby fyzických kódů, radial basis function, radiální bázová funkce, ComputingMethodologies_COMPUTERGRAPHICS
Abstract

Physical codes are dependent on a discipline and describe the reality through equations solved on a geometry. Strong links, or couplings, between them are set up to increase the result accuracy, leading to data exchanges. Mechanical codes calculate geometrical deformations which must be tranferred by couplings. Their direct exchange is generally impossible if coupled codes compute with different models of the same geometry (in practice different meshes). Moreover, two meshes can only share border(s). This paper focuses on this case: one mesh must follow the border deformation of the mechanical code mesh.

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