US 11,956,465 B2
Difference calculation based on partial position
Hongbin Liu, Beijing (CN); Li Zhang, San Diego, CA (US); Kai Zhang, San Diego, CA (US); Jizheng Xu, 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 Nov. 24, 2021, as Appl. No. 17/534,968.
Application 17/534,968 is a continuation of application No. 17/154,485, filed on Jan. 21, 2021, abandoned.
Application 17/154,485 is a continuation of application No. PCT/CN2019/119634, filed on Nov. 20, 2019.
Claims priority of application No. PCT/CN2018/116371 (WO), filed on Nov. 20, 2018; application No. PCT/CN2019/070062 (WO), filed on Jan. 2, 2019; and application No. PCT/CN2019/072060 (WO), filed on Jan. 16, 2019.
Prior Publication US 2022/0086481 A1, Mar. 17, 2022
Int. Cl. H04N 19/52 (2014.01); H04N 19/105 (2014.01); H04N 19/119 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/184 (2014.01); H04N 19/577 (2014.01); H04N 19/593 (2014.01)
CPC H04N 19/52 (2014.11) [H04N 19/105 (2014.11); H04N 19/119 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/184 (2014.11); H04N 19/577 (2014.11); H04N 19/593 (2014.11)] 22 Claims
OG exemplary drawing
 
1. A method of video processing, comprising:
determining whether to enable a first tool, for a conversion between a current block and a bitstream based on a rule, wherein the rule indicates that the first tool and a second tool are not both used by the current block; and
performing, based on the determining, a conversion between the current block and the bitstream;
wherein one of the first tool and the second tool is a decoder side motion vector derivation tool to derive a refinement of motion information related to the current block, and
the other of the first tool and the second tool comprises:
 a merge mode with motion vector differences which comprises motion vector expression comprising a first parameter representing a motion vector difference and a second parameter indicating a base candidate, wherein the first parameter comprises a motion magnitude and a motion direction,
wherein the decoder side motion vector derivation tool is disabled upon a determination that the current block is coded with the merge mode with motion vector differences.