Methods and devices for lossless coding modes in video coding
AssigneeBeijing Dajia Internet Information Technology Co., Ltd.
InventorsTsung-Chuan MA, Xianglin WANG, Xiaoyu XIU, Yi-Wen CHEN, Hong-Jheng JHU, Bing YU
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Abstract
Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for decoding a video signal. A decoder partitions a video picture into a plurality of coding units (CUs) comprising a lossless CU. The decoder may further receive a high-level syntax. The high-level syntax may include, for example, a first flag that indicates whether a residual coding scheme is switchable.
Claims20
A method for encoding a video signal, comprising:
- partitioning, by an encoder, a video picture into a plurality of coding units (CUs) comprising a lossless CU;
- generating, by the encoder, a high-level syntax, wherein the high-level syntax comprises a first flag that indicates whether a residual coding scheme used by a CU in the CUs or by a coding block of a CU in the CUs is switchable between a residual coding scheme used by a non-transform skip mode and a residual coding scheme used by a transform skip mode;
- and
- signaling, by the encoder, the high-level syntax.
A computing device, comprising:
- one or more processors;
- and
- a non-transitory computer-readable storage medium storing instructions executable by the one or more processors, wherein the one or more processors are configured to:
- partition a video picture into a plurality of coding units (CUs) comprising a lossless CU;
- generate a high-level syntax, wherein the high-level syntax comprises a first flag that indicates whether a residual coding scheme used by a CU in the CUs or by a coding block of a CU in the CUs is switchable between a residual coding scheme used by a non-transform skip mode and a residual coding scheme used by a transform skip mode;
- and
- signal the high-level syntax.
A non-transitory computer-readable storage medium storing a bitstream generated by a method comprising:
- partitioning, by an encoder, a video picture into a plurality of coding units (CUs) comprising a lossless CU;
- and
- generating, by the encoder, a high-level syntax, wherein the high-level syntax comprises a first flag that indicates whether a residual coding scheme used by a CU in the CUs or by a coding block of a CU in the CUs is switchable between a residual coding scheme used by a non-transform skip mode and a residual coding scheme used by a transform skip mode.
Dependencies are inferred from the claim text.