US 12,143,569 B2
Inter prediction method and apparatus
Na Zhang, Shenzhen (CN); Jicheng An, Shenzhen (CN); Quanhe Yu, Beijing (CN); and Jianhua Zheng, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Jul. 25, 2022, as Appl. No. 17/872,240.
Application 17/872,240 is a continuation of application No. 17/011,163, filed on Sep. 3, 2020, granted, now 11,412,210.
Application 17/011,163 is a continuation of application No. PCT/CN2018/081541, filed on Apr. 2, 2018.
Claims priority of application No. PCT/CN2018/081195 (WO), filed on Mar. 29, 2018.
Prior Publication US 2023/0010907 A1, Jan. 12, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/105 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/30 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/30 (2014.11)] 18 Claims
OG exemplary drawing
 
1. An inter prediction method which is performed by a coding device, comprising:
obtaining a first reference frame index and a first motion vector of a to-be-processed block;
deriving a second reference frame index from the first reference frame index by determining that a picture frame indicated by the second reference frame index is a reference frame with a smallest quantization parameter in a reference frame set of the to-be-processed block except the picture frame indicated by the first reference frame index, wherein the second reference frame index is different from the first reference frame index;
scaling the first motion vector to obtain a second motion vector;
obtaining a first reference block of the to-be-processed block according to the first reference frame index and the first motion vector;
obtaining a second reference block of the to-be-processed block according to the second reference frame index and the second motion vector; and
weighting the first reference block and the second reference block to obtain a combined prediction block.