Method and apparatus for compression of low bit rate video signals

摘要: An apparatus and method to compress a video signal uses a motion compensated DCT (Discrete Cosine Transform) type approach. However, instead of relying upon a DCT coder to process a motion residual signal, the motion residual signal is processed by a pattern marcher. The pattern marcher identifies regions in the motion residual signal that have not been accurately reproduced on account of image motion. Each of these regions is compared to a set of library patterns in a pattern library. The pattern marcher links each region with a selected library pattern, which accurately character izes the region. The pattern matcher forms an atom param eter signal characterizing each selected library pattern. The atom parameter signal is transmitted as a compressed ver sion of the video signal. After transmission, the video signal is reconstructed from the atom parameter signal. In particular, a pattern fetcher is used to …