US 12,382,085 B2
Decoder side motion derivation based on processing parameters
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 Aug. 10, 2021, as Appl. No. 17/398,903.
Application 17/398,903 is a continuation of application No. PCT/CN2020/075226, filed on Feb. 14, 2020.
Claims priority of application No. PCT/CN2019/075068 (WO), filed on Feb. 14, 2019; and application No. PCT/CN2019/082585 (WO), filed on Apr. 13, 2019.
Prior Publication US 2021/0368181 A1, Nov. 25, 2021
Int. Cl. H04N 19/52 (2014.01); H04N 19/132 (2014.01); H04N 19/137 (2014.01); H04N 19/139 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/184 (2014.01); H04N 19/186 (2014.01); H04N 19/46 (2014.01); H04N 19/513 (2014.01); H04N 19/577 (2014.01)
CPC H04N 19/52 (2014.11) [H04N 19/132 (2014.11); H04N 19/137 (2014.11); H04N 19/139 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/184 (2014.11); H04N 19/186 (2014.11); H04N 19/46 (2014.11); H04N 19/513 (2014.11); H04N 19/577 (2014.11)] 15 Claims
OG exemplary drawing
 
1. A method of processing video data, comprising:
obtaining a refined motion information for a current video block of a video by implementing a decoder-side motion vector derivation (DMVD) scheme based on at least a weight parameter, wherein the weight parameter is applied to prediction blocks in a generation process for a final prediction block for the current video block; and
performing a conversion between the current video block and a bitstream of the video at least using the refined motion information and the weight parameter,
wherein a syntax element of the weight parameter is signaled using a Generalized Bi-Prediction (GBI) technique or a weighted prediction technique,
wherein the weight parameter is derived using a Local Illumination Compensation (LIC) technique,
wherein the weight parameter is associated with a reshaping process that maps a set of sample values to another set of sample values, and
wherein the reshaping process is disabled for the prediction blocks generated with the refined motion information for the current video block.