US 12,137,209 B2
Model storage for warp extend and warp delta modes
Han Gao, San Diego, CA (US); Xin Zhao, Palo Alto, CA (US); Liang Zhao, Palo Alto, CA (US); and Shan Liu, Palo Alto, CA (US)
Assigned to TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed by TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed on Nov. 3, 2022, as Appl. No. 17/980,302.
Claims priority of provisional application 63/388,883, filed on Jul. 13, 2022.
Prior Publication US 2024/0022709 A1, Jan. 18, 2024
Int. Cl. H04N 19/105 (2014.01); H04N 19/136 (2014.01); H04N 19/176 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/136 (2014.11); H04N 19/176 (2014.11); H04N 19/70 (2014.11)] 18 Claims
OG exemplary drawing
 
1. A method for video coding, performed by at least one processor, the method comprising:
receiving a video bitstream comprising a current block;
extracting a syntax element from the video bitstream, the syntax element indicating that the current block is to be predicted using a warp model;
generating a set of parameters corresponding to the warp model for the current block;
storing a first subset of the set of parameters corresponding to the warp model for the current block in a memory, wherein at least one parameter from the set of parameters is not in the first subset;
deriving the at least one parameter corresponding to the warp model that is not in the first subset; and
decoding at least part of the video bitstream based on the warp model,
wherein one or more parameters included in the set of parameters and not included in the first subset:
are determined based on the warp mode of the current block, and
are projected using the stored first subset when the warp mode is a warp extend mode.