Context adaptation within video coding modules

摘要

Context adaptive video coding is described in which encoding and decoding relies on deriving context adaptive coding tools, which can be applied within a coder (encoder and/or decoder) to one or more coding processes. A discontinuity of the block is identified, and a context feature extracted having directionality and location of discontinuity. Coding then uses the context adaptive tools to enhance coding efficiency, without the need of additional side information. Context adaptation according to invention can be applied such as to inter prediction, intra prediction, transform, interpolation filtering, and/or scanning.