Patent ID: 6985526
Filing Date: 2006-01-10
Classification: H04N

Abstract:
1. For use in an SNR scalable video encoder comprising, for allowing a progressive transmission of information, a base layer circuit capable of receiving an input stream of video images and generating therefrom compressed base layer video data suitable for transmission to a video decoder and at least an enhancement layer circuit capable of generating therefrom enhancement layer video data associated with the compressed base layer video data and suitable for transmission to the video decoder, an encoding method based on a hierarchical triangular mesh representation to which a matching pursuit error coding step is specifically adapted, said encoding method comprising the following steps: a base layer encoding step, provided for receiving a couple of reference and current images N- a first enhancement layer encoding step, provided for receiving said current image and a reconstructed image N′c at least another enhancement layer encoding step including similar receiving and generating operations; the matching pursuit method being applied during each encoding step to the error residual image ε