Title:
METHOD AND APPARATUS OF SIGN PREDICTION FOR BLOCK VECTOR DIFFERENCE IN INTRA BLOCK COPY
Document Type and Number:
WIPO Patent Application WO/2024/088048
Kind Code:
A1
Abstract:
A method and apparatus for BVP/MVP sign prediction. According to this method, a BVP/MVP is determined. Absolute x-component and y-component values for a BVD/MVD are determined. A set of candidate BVs/MVs is determined based on the BVP/MVP combined with the absolute x-component and y-component values for the BVD/MVD and possible sign combinations. A set of reference blocks corresponding to the set of candidate BVs or candidate MVs is determined, wherein a member reference block is set as an invalid reference block if any sample of the member reference block or any sample of a template of the member reference block is outside an available region. A target reference block from the set of reference blocks, which is reordered according to template costs, is determined. True sign for the BVD or the MVD is determined based on a reordered set of reference blocks.
Inventors:
LAI CHEN-YEN (CN)
CHEN CHING-YEH (CN)
CHUANG TZU-DER (CN)
CHEN CHING-YEH (CN)
CHUANG TZU-DER (CN)
Application Number:
PCT/CN2023/123522
Publication Date:
May 02, 2024
Filing Date:
October 09, 2023
Export Citation:
Assignee:
MEDIATEK INC (CN)
International Classes:
H04N19/105
Domestic Patent References:
| WO2018205914A1 | 2018-11-15 |
Foreign References:
| US11057640B2 | 2021-07-06 | |||
| CN112740672A | 2021-04-30 | |||
| US20220030223A1 | 2022-01-27 |
Other References:
M. SALEHIFAR (LGE), S. PALURI (LGE), S. KIM (LGE): "CE8: Unified MVD and Block Vector Difference Coding (CE8-1.2)", 15. JVET MEETING; 20190703 - 20190712; GOTHENBURG; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), 19 June 2019 (2019-06-19), XP030205682
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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