US 11,722,688 B2
Block size restrictions for DMVR
Hongbin Liu, Beijing (CN); Li Zhang, San Diego, CA (US); Kai Zhang, San Diego, CA (US); and Yue Wang, 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 Feb. 17, 2022, as Appl. No. 17/674,488.
Application 17/674,488 is a continuation of application No. 16/998,653, filed on Aug. 20, 2020, granted, now 11,363,290.
Application 16/998,653 is a continuation of application No. PCT/IB2019/055616, filed on Jul. 2, 2019.
Claims priority of provisional application 62/693,412, filed on Jul. 2, 2018.
Prior Publication US 2022/0174309 A1, Jun. 2, 2022
Int. Cl. H04N 19/513 (2014.01); H04N 19/176 (2014.01); H04N 19/44 (2014.01); H04N 19/56 (2014.01)
CPC H04N 19/513 (2014.11) [H04N 19/176 (2014.11); H04N 19/44 (2014.11); H04N 19/56 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of video processing, comprising:
performing a conversion between a video block and a bitstream of the video block based on at least one of a width and a height of the video block;
refraining from applying, in response to a ratio of the width to the height (W/H) being smaller than a first threshold value, a decoder side motion vector refinement step during the conversion; and
refraining from applying, in response to the ratio of the width to the height (W/H) being greater than a second threshold value, the decoder side motion vector refinement step during the conversion,
wherein W and H are the width and the height of the video block, respectively,
wherein the decoder side motion vector refinement step includes refining a value of a motion vector signaled in the bitstream and using the refined value during the conversion, and
wherein the decoder side motion vector refinement step is applied in a sub-block level.