ENTROPY CODING TECHNIQUES FOR DISPLAY STREAM COMPRESSION (DSC) OF NON-4:4:4 CHROMA SUB-SAMPLING

摘要

Provided are systems and methods for entropy encoding video data. A plurality of samples of a block of video data is partitioned into one or more groups of samples, based upon a coding mode of the block and a chroma subsampling image format of the samples. Entropy coding is performed on the block via performing a group-wise skip on at least one of the one or more groups in response to all of the samples in the at least one group having a value equal to a predetermined value, the group-wise skip comprising refraining from encoding the samples associated with the at least one group.

主权项

1. A method of entropy encoding video data, comprising:
receiving a plurality of samples associated with a color component of a block of video data; determining whether the samples are to be encoded using block-wise skip, wherein the determination comprises determining whether all samples corresponding to the color component have a value equal to a predetermined value, the block-wise skip comprising refraining from encoding the plurality of samples; in response to determining that the samples are not be encoded using block-wise skip:
determining a chroma subsampling image format of the block;partitioning the block of the video data into one or more groups of samples, wherein a number of groups of the one or more groups is based at least in part on a coding mode of the block, the chroma sub sampling image format of the samples, and the color component associated with the samples; andentropy encoding the one or more groups of samples.