Image analysis – Image compression or coding – Transform coding
Reexamination Certificate
2008-03-18
2008-03-18
Ahmed, Samir (Department: 2624)
Image analysis
Image compression or coding
Transform coding
C382S232000, C382S240000, C382S241000, C375S240000, C375S240040
Reexamination Certificate
active
07346219
ABSTRACT:
The invention concerns a method for encoding at least a source image using a hierarchical mesh defining at least two nested spaces corresponding each to a decomposition level of said meshing, which consists, at least at a decomposition level n (except the first decomposition level), in delivering only image coefficients expressed in a base of functions defined in a space orthogonal to the space corresponding to the preceding decomposition level n−1, said functions being selected so that said image coefficients enable to optimize for said decomposition level n the data already transmitted for the preceding decomposition level n−1, so as to produce a reconstructed image, representing said source image, with optimized restoration quality for said decomposition level n.
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Demaret Laurent
Laurent-Chatenet Nathalie
Ahmed Samir
France Telecom
Newman Michael A
Shewchuk Jeffrey D.
Shewchuk IP Services
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