SYSTEM AND METHOD FOR ACHIEVING INTER-LAYER VIDEO QUALITY SCALABILITY

摘要

A system and method for providing quality scalability in a video stream. A bit stream is provided with a video sequence having a base layer and an enhancement layer. The enhancement layer includes a plurality of enhancement layer blocks, each of which includes a block coefficient. Each layer block coefficient is assigned to one of a plurality of zones, and layer block coefficients assigned to a particular one of the plurality of zones are removed periodically.