Method and system for selectively breaking prediction in video coding

摘要

Described are techniques in video coding and/or decoding that allow for selectively breaking prediction and/or in loop filtering across segment boundaries between different segments of a video picture. A high layer syntax element, such as a parameter set or a slice header, may contain one or more indications signalling to an encoder and/or decoder whether an associated prediction or loop filtering tool may be applied across the segment boundary. In response to such one or more indications, the encoder and/or decoder may then control the prediction or loop filtering tool accordingly.

主权项

1. A method for decoding by a decoder a coded video picture, the method comprising:
obtaining a first slice and a second slice of the coded video picture, wherein the first slice and the second slice are divided by at least one slice boundary, wherein at least the first slice is divided by a tile boundary to belong to two tiles, and wherein the two tiles do not have associated tile headers; obtaining, from the coded video picture, a parameter set including a first flag for controlling a sample adaptive offset operation across the tile boundary; determining whether to apply the sample adaptive offset operation across the tile boundary according to the first flag; obtaining, from the coded video picture, a slice header including a second flag for controlling a sample adaptive offset operation across the at least one slice boundary; and determining whether to apply the sample adaptive offset operation across the at least one slice boundary according to the second flag.