US 12,445,616 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 Jun. 12, 2024, as Appl. No. 18/741,097.
Application 18/741,097 is a continuation of application No. 18/322,037, filed on May 23, 2023, granted, now 12,047,577.
Application 18/322,037 is a continuation of application No. 17/195,798, filed on Mar. 9, 2021, granted, now 11,706,417, issued on Jul. 18, 2023.
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 2024/0333935 A1, Oct. 3, 2024
This patent is subject to a terminal disclaimer.
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)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
parsing a received bitstream to obtain information corresponding to a quantized coefficient and to 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, and wherein either 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 in which the current block is located is a P-type slice or a B-type slice;
obtaining a first context model corresponding to the to-be-entropy-decoded syntax element;
performing entropy decoding on the to-be-entropy-decoded syntax element based on the first context model;
obtaining the quantized coefficient based on the information;
performing inverse quantization on the quantized coefficient to obtain an inverse quantized coefficient;
performing prediction processing on the current block based on a third syntax element that is in the current block and that is based on entropy decoding in order to obtain a prediction block of the current block; and
obtaining a reconstructed image of the current block based on the prediction block and the inverse quantized coefficient.