US 12,356,003 B2
Encoding method, decoding method, and processing method
Tadamasa Toma, Osaka (JP); Takahiro Nishi, Nara (JP); Kiyofumi Abe, Osaka (JP); and Ryuichi Kanoh, Osaka (JP)
Assigned to Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed on Apr. 29, 2024, as Appl. No. 18/649,787.
Application 18/649,787 is a continuation of application No. 18/316,944, filed on May 12, 2023, granted, now 12,003,759.
Application 18/316,944 is a continuation of application No. 17/389,010, filed on Jul. 29, 2021, granted, now 11,689,739, issued on Jun. 27, 2023.
Application 17/389,010 is a continuation of application No. 16/799,315, filed on Feb. 24, 2020, granted, now 11,128,883, issued on Sep. 21, 2021.
Application 16/799,315 is a continuation of application No. PCT/JP2019/003265, filed on Jan. 30, 2019.
Claims priority of provisional application 62/626,974, filed on Feb. 6, 2018.
Prior Publication US 2024/0283970 A1, Aug. 22, 2024
Int. Cl. H04N 19/52 (2014.01); H04N 19/157 (2014.01); H04N 19/176 (2014.01); H04N 19/182 (2014.01); H04N 19/59 (2014.01)
CPC H04N 19/52 (2014.11) [H04N 19/157 (2014.11); H04N 19/176 (2014.11); H04N 19/182 (2014.11); H04N 19/59 (2014.11)] 3 Claims
OG exemplary drawing
 
1. An encoding method comprising:
determining a mode to be applied to a current block, the mode including a sub-block mode and a first mode different from the sub-block mode,
wherein in the first mode, inter-prediction parameters are inferred from a neighboring block neighboring the current block, and
wherein in the sub-block mode, the current block includes a plurality of sub-blocks, and inter-prediction parameters are provided for each of the plurality of sub-blocks;
in response to the mode being determined to be the first mode, generating a prediction image for the current block by performing a bi-directional optical flow prediction process, wherein the bi-directional optical flow prediction process uses a spatial gradient for the current block; and
in response to the mode being determined to be the sub-block mode, generating a prediction image for the current block by not performing the bi-directional optical flow prediction process.