	US 12,238,330 B2
	Radio frequency assembly and electronic device
Feiyang Zeng, Hangzhou (CN); Dong Jiang, Hangzhou (CN); Jucai Lin, Hangzhou (CN); Jun Yin, Hangzhou (CN); and Cheng Fang, Hangzhou (CN)
Assigned to SHEJIANG DAHUA TECHNOLOGY CO., LTD., Hangzhou (CN)
Filed by ZHEJIANG DAHUA TECHNOLOGY CO., LTD., Hangzhou (CN)
Filed on Apr. 18, 2022, as Appl. No. 17/722,393.
Application 17/722,393 is a continuation of application No. PCT/CN2020/138397, filed on Dec. 22, 2020.
Claims priority of application No. 201911383004.1 (CN), filed on Dec. 27, 2019.
Prior Publication US 2022/0248048 A1, Aug. 4, 2022
Int. Cl. H04N 19/56 (2014.01); H04N 19/11 (2014.01); H04N 19/139 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/182 (2014.01); H04N 19/184 (2014.01); H04N 19/186 (2014.01); H04N 19/52 (2014.01); H04N 19/567 (2014.01); H04N 19/593 (2014.01); H04N 19/70 (2014.01); H04N 19/80 (2014.01)

CPC H04N 19/56 (2014.11) [H04N 19/11 (2014.11); H04N 19/139 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/182 (2014.11); H04N 19/184 (2014.11); H04N 19/186 (2014.11); H04N 19/52 (2014.11); H04N 19/567 (2014.11); H04N 19/593 (2014.11); H04N 19/70 (2014.11); H04N 19/80 (2014.11)]

11 Claims

1. A motion vector prediction method, comprising:

acquiring a candidate list of a current coding block in a preset prediction mode, wherein the candidate list comprises a plurality of candidate motion vectors;

performing a motion search of the plurality of candidate motion vectors in the candidate list to obtain an initial optimal motion vector of the current coding block in the preset prediction mode;

performing motion compensation on the initial optimal motion vector by using each of a first preset number of pixel accuracies, to determine a final optimal motion vector of the current coding block, wherein the first preset number of pixel accuracies is equal to or greater than 3;

wherein the preset prediction mode comprises any one of a plurality of prediction modes, and pixel accuracies used in any one of the prediction modes are identical;

wherein said performing motion compensation on the initial optimal motion vector by using each of a first preset number of pixel accuracies, to determine a final optimal motion vector of the current coding block comprises:

performing refinement treatment on the initial optimal motion vector by using each of the first preset number of pixel accuracies to obtain a plurality of first offset motion vectors deviating from the initial optimal motion vector;

using each of the first preset number of pixel accuracies as a first target pixel accuracy;

selecting any one of the initial optimal motion vector and the first offset motion vectors whose pixel accuracies are lower than the first target pixel accuracy, as a starting motion vector corresponding to the first target pixel accuracy;

performing refinement treatment on the starting motion vector corresponding to the first target pixel accuracy by using the first target pixel accuracy to obtain a plurality of second offset motion vectors deviating from the starting motion vector;

selecting, from the plurality of second offset motion vectors, a motion vector whose rate-distortion cost satisfies a preset screening condition, as the final optimal motion vector of the current coding block.