US 11,812,047 B2
Encoder, decoder, encoding method, and decoding method
Takashi Hashimoto, Hyogo (JP); Kiyofumi Abe, Osaka (JP); Tadamasa Toma, Osaka (JP); Takahiro Nishi, Nara (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 Aug. 16, 2021, as Appl. No. 17/403,456.
Application 17/403,456 is a continuation of application No. 16/860,367, filed on Apr. 28, 2020, granted, now 11,134,260.
Application 16/860,367 is a continuation of application No. PCT/JP2018/039421, filed on Oct. 24, 2018.
Claims priority of provisional application 62/578,756, filed on Oct. 30, 2017.
Prior Publication US 2021/0377556 A1, Dec. 2, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/51 (2014.01); H04N 19/433 (2014.01)
CPC H04N 19/51 (2014.11) [H04N 19/433 (2014.11)] 2 Claims
OG exemplary drawing
 
1. An encoding method for encoding a picture to generate a coded stream, the encoding method comprising:
generating a first prediction image of a current block included in a current picture by referring to a first region included in a reference picture different from the current picture;
operating a bi-directional optical flow process to generate a second prediction image based on the first prediction image by referring to a second region included in the first region, and not operating the bi-directional optical flow process by referring to a third region not included in the first region; and
encoding the current block based on the second prediction image.