	US 11,706,417 B2
	Video decoding method and video decoder
Huanbang Chen, Shenzhen (CN); and Haitao Yang, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Mar. 9, 2021, as Appl. No. 17/195,798.
Application 17/195,798 is a continuation of application No. PCT/CN2019/105024, filed on Sep. 10, 2019.
Claims priority of application No. 201811053068.0 (CN), filed on Sep. 10, 2018.
Prior Publication US 2021/0195198 A1, Jun. 24, 2021
Int. Cl. H04N 19/13 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/52 (2014.01); H04N 19/70 (2014.01)

CPC H04N 19/13 (2014.11) [H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/52 (2014.11); H04N 19/70 (2014.11)]

14 Claims

1. A video decoding method, comprising:

parsing a received bitstream to obtain a to-be-entropy-decoded syntax element in a current block, wherein the to-be-entropy-decoded syntax element comprises a first syntax element or a second syntax element;

obtaining a context model corresponding to the to-be-entropy-decoded syntax element by either determining a first context model corresponding to the first syntax element or determining a second context model corresponding to the second syntax element;

performing entropy decoding on the to-be-entropy-decoded syntax element based on the context model to obtain a third syntax element;

performing prediction processing on the current block based on the third syntax element to obtain a prediction block of the current block; and

obtaining a reconstructed image of the current block based on the prediction block;

wherein the first syntax element is a first flag indicating whether a subblock-based merge mode is used for the current block or the second syntax element is a second flag indicating whether an affine motion model-based advanced motion vector prediction (AMVP) mode is used for the current block when a slice that comprises the current block is a predicted (P)-type slice or a bi-directional predicted (B)-type slice.