US 11,812,030 B2
Entropy coding for motion precision syntax
Yang Wang, Beijing (CN); Li Zhang, San Diego, CA (US); Zhipin Deng, Beijing (CN); Kai Zhang, San Diego, CA (US); and Hongbin Liu, Beijing (CN)
Assigned to BEIJING BYTEDANCE NETWORK TECHNOLGY 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 Oct. 28, 2022, as Appl. No. 17/976,189.
Application 17/976,189 is a continuation of application No. PCT/CN2021/091869, filed on May 6, 2021.
Claims priority of application No. PCT/CN2020/088546 (WO), filed on May 1, 2020.
Prior Publication US 2023/0115118 A1, Apr. 13, 2023
Int. Cl. H04N 19/137 (2014.01); H04N 19/119 (2014.01); H04N 19/176 (2014.01); H04N 19/189 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/137 (2014.11) [H04N 19/119 (2014.11); H04N 19/176 (2014.11); H04N 19/189 (2014.11); H04N 19/70 (2014.11)] 18 Claims
OG exemplary drawing
 
1. A video processing method, comprising:
performing a conversion between a first block of a video and a bitstream of the video according to a rule,
wherein the conversion is based on an adaptive motion vector resolution (AMVR) tool,
wherein the rule specifies that selection of a context increasement (ctxInc) for a first bin within a bin string of a first syntax element that specifies a resolution of motion vector difference associated with an AMVR shift is derived based on usage of a coding mode for the first block, and wherein the coding mode for the first block is one of an affine inter mode, an intra block copy (IBC) mode, or a normal inter mode which is a non-affine inter mode,
wherein a first context increasement is assigned for the first bin in case the first block is coded using the IBC mode, a second context increasement is assigned for the first bin in case that the first block is coded using the affine inter mode, and a third context increasement is assigned for the first bin in case that the first block is coded using the normal inter mode, and
wherein the first context increasement is equal to 1, the second context increasement is equal to 2, and the third context increasement is equal to 0.