Method and apparatus for preventing error propagation in a video sequence

摘要

A method for constructing a sequence of video pictures is disclosed. A region of a video picture that is supposed to be used as a predictor to construct a block corresponding to a second picture in a video sequence is ignored when an error correction technique is used to construct the predictor region. The invention applies information corresponding to a region from an alternative picture in the video sequence as replacement for the predictor region. This replacement information is then used as the basis to predictively construct the block in accordance with a video decoding operation.