Affiliation: | 1 GREYC CNRS UMR 6072, Image Processing Group, ENSICAEN 14050, Caen Cedex, France
2 CEA-Saclay, DAPNIA/SEDI-SAP, Service d'Astrophysique, F-91191 Gif sur Yvette, France
3 Department of Computer Science, Royal Holloway, University of London, Egham TW20 0EX, UK |