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Title:
DISPLACEMENT VECTOR PREDICTION METHOD IN VIDEO CODING AND DECODING, APPARATUS, AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/232979
Kind Code:
A1
Abstract:
Provided in the present application are a displacement vector prediction method in video coding and decoding, an apparatus, and a device, relating to the technical field of video coding and decoding. In the present application, a candidate displacement vector is constructed by means of joining displacement vectors associated with a plurality of prediction modes, and subsequently deriving a prediction displacement vector for a current unit from the candidate displacement vector, where information for an already coded/decoded unit having a same prediction mode as the current unit can be utilized, and a combination of information of an already coded/decoded unit having a different prediction mode from the current unit is further allowed, for deriving the prediction displacement vector for the current unit, thereby allowing a candidate displacement vector to have a higher probability of being selected as the prediction displacement vector, improving displacement vector coding performance.

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Inventors:
WANG YINGBIN (CN)
XU XIAOZHONG (CN)
LIU SHAN (CN)
Application Number:
PCT/CN2021/085697
Publication Date:
November 25, 2021
Filing Date:
April 06, 2021
Export Citation:
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Assignee:
TENCENT TECH SHENZHEN CO LTD (CN)
International Classes:
H04N19/70; H04N19/593
Foreign References:
CN106576171A2017-04-19
CN112218092A2021-01-12
CN110944190A2020-03-31
CN202010442257A2020-05-22
Other References:
ZHAO, LIPING ET AL.: "A Universal String Prediction Approach and Its Application in AVS2 Mixed Content Coding Full-text in Chinese", CHINESE JOURNAL OF COMPUTERS, vol. 42, no. 9, 30 September 2019 (2019-09-30), pages 2100 - 2113, XP055869597
See also references of EP 4030761A4
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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