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US 12,010,321 B2Granted
Affine based merge with MVD
AssigneesBeijing Bytedance Network Technology Co., Ltd., Bytedance Inc.
InventorsKai Zhang, Li Zhang, Hongbin Liu, Jizheng Xu, Yue Wang
Life of this patent
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Abstract
Disclosed and systems, methods and devices for video processing. An exemplary method for video processing includes: determining for a current video block, an indication which indicates that an affine merge with motion vector difference (MMVD) mode is applied to the current video block; performing a conversion between the current video block and a bitstream representation of a current video block based on the indication, the indication being activated based on the usage of at least one merge list for the current video block.
Claims18
A method for video processing, comprising:
- determining that an affine mode is enabled for a first block of a video;
- in response to the affine mode being enabled for the first block, determining whether a first ultimate motion vector expression mode related with the affine mode is applied to the first block;
- in response to the first ultimate motion vector expression mode related with the affine mode being applied to the first block, determining a first ultimate motion vector expression mode information for the first block, wherein the first ultimate motion vector expression mode information comprises a first distance index and a first direction information, the first distance index indicates an offset of a refined motion information respective to an original motion information of the first block and the first direction information indicates a direction of the offset;
- and
- performing a conversion between the first block and a bitstream of the video using the first ultimate motion vector expression mode information,
- wherein a second ultimate motion vector expression mode related with a non-affine mode is applied to a second block coded with the non-affine mode, wherein the second ultimate motion vector expression mode corresponds to a second ultimate motion vector expression mode information, and wherein the second ultimate motion vector expression mode information comprises a second distance index indicating an offset of a refined motion information respective to an original motion information of the second block and a second direction information indicating a direction of the offset.
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An apparatus for processing video data comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to:
- determine that an affine mode is enabled for a first block of a video;
- in response to the affine mode being enabled for the first block, determine whether a first ultimate motion vector expression mode related with the affine mode is applied to the first block;
- in response to the first ultimate motion vector expression mode related with the affine mode being applied to the first block, determine a first ultimate motion vector expression mode information for the first block, wherein the first ultimate motion vector expression mode information comprises a first distance index and a first direction information, the first distance index indicates an offset of a refined motion information respective to an original motion information of the first block and the first direction information indicates a direction of the offset;
- and
- perform a conversion between the first block and a bitstream of the video using the first ultimate motion vector expression mode information,
- wherein a second ultimate motion vector expression mode related with a non-affine mode is applied to a second block coded with the non-affine mode, wherein the second ultimate motion vector expression mode corresponds to a second ultimate motion vector expression mode information, wherein the second ultimate motion vector expression mode information comprises a second distance index indicating an offset of a refined motion information respective to an original motion information of the second block and a second direction information indicating a direction of the offset.
3 more elements
A non-transitory computer-readable storage medium storing instructions that cause a processor to:
- determine that an affine mode is enabled for a first block of a video;
- in response to the affine mode being enabled for the first block, determine whether a first ultimate motion vector expression mode related with the affine mode is applied to the first block;
- in response to the first ultimate motion vector expression mode related with the affine mode being applied to the first block, determine a first ultimate motion vector expression mode information for the first block, wherein the first ultimate motion vector expression mode information comprises a first distance index and a first direction information, the first distance index indicates an offset of a refined motion information respective to an original motion information of the first block and the first direction information indicates a direction of the offset;
- and
- perform a conversion between the first block and a bitstream of the video using the first ultimate motion vector expression mode information;
- wherein a second ultimate motion vector expression mode related with a non-affine mode is applied to a second block coded with the non-affine mode, wherein the second ultimate motion vector expression mode corresponds to a second ultimate motion vector expression mode information, wherein the second ultimate motion vector expression mode information comprises a second distance index indicating an offset of a refined motion information respective to an original motion information of the second block and a second direction information indicating a direction of the offset.
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A method for storing a bitstream of a video, comprising:
- determining that an affine mode is enabled for a first block of the video;
- in response to the affine mode being enabled for the first block, determining whether a first ultimate motion vector expression mode related with the affine mode is applied to the first block;
- in response to the first ultimate motion vector expression mode related with the affine mode being applied to the first block, determining a first ultimate motion vector expression mode information for the first block, wherein the first ultimate motion vector expression mode information comprises a first distance index and a first direction information, the first distance index indicates an offset of a refined motion information respective to an original motion information of the first block and the first direction information indicates a direction of the offset;
- generating the bitstream using the first ultimate motion vector expression mode information;
- and
- storing the bitstream in a non-transitory computer-readable recording medium,
- wherein a second ultimate motion vector expression mode related with a non-affine mode is applied to a second block coded with the non-affine mode, wherein the second ultimate motion vector expression mode corresponds to a second ultimate motion vector expression mode information, wherein the second ultimate motion vector expression mode information comprises a second distance index indicating an offset of a refined motion information respective to an original motion information of the second block and a second direction information indicating a direction of the offset.
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Dependencies are inferred from the claim text.