US 11,956,448 B2
Affine prediction improvements for video coding
Kai Zhang, San Diego, CA (US); Yuwen He, San Diego, CA (US); Li Zhang, San Diego, CA (US); Hongbin Liu, Beijing (CN); Tianliang Fu, Beijing (CN); Junru Li, Beijing (CN); and Siwei Ma, Beijing (CN)
Assigned to BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., Beijing (CN); and BYTEDANCE INC., Los Angeles, CA (US)
Filed by Beijing Bytedance Network Technology Co., Ltd., Beijing (CN); and Bytedance Inc., Los Angeles, CA (US)
Filed on Dec. 7, 2022, as Appl. No. 18/076,869.
Application 18/076,869 is a continuation of application No. PCT/CN2021/098811, filed on Jun. 8, 2021.
Claims priority of provisional application 63/046,634, filed on Jun. 30, 2020.
Prior Publication US 2023/0107138 A1, Apr. 6, 2023
Int. Cl. H04N 19/157 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01)
CPC H04N 19/157 (2014.11) [H04N 19/176 (2014.11); H04N 19/186 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of processing video data, comprising:
determining, for a conversion between a current video block of a video and a bitstream of the video, whether to apply a fractional sample interpolation process to a color component of a subblock of the current video block based on whether a condition is satisfied; and
performing the conversion based on the determining,
wherein the condition is one of:
the current video block not being coded with an affine mode, or
a remainder of xSbIdx divided by SubWidthC and a remainder of ySbIdx divided by SubHeightC being 0, and wherein xSbIdx is an index of the subblock in a horizontal direction, ySbIdx is an index of the subblock in a vertical direction, and SubWidthC and SubHeightC represent a color format of a current picture including the current video block.