| 摘要 |
The present invention relates to a method and a device for coding a multidimensional signal (LL0) comprising samples to form a coded stream (FC), such as an image or a multimedia content. The method comprises:—filtering (E102) original samples by applying a first filter (F, G) to obtain filtered samples (L1)—coding (E172) said filtered samples to obtain coded filtered samples adapted to be decoded by a decoder into decoded filtered samples,—applying (E106) a lossy modification on the filtered samples to obtain modified samples (L1dec);—determining (E110, E130, E150) a geometric orientation of one second filter (F′, G′) to be applied by the decoder to a decoded filtered sample, the determining being based on the modified samples, the original samples and a predetermined criterion, and—providing (E174) said determined geometric orientations and said coded filtered samples to the decoder.
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