Invention Grant
- Patent Title: Method and system using overlapped search space for bi-predictive motion vector refinement
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Application No.: US16730735Application Date: 2019-12-30
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Publication No.: US10856006B2Publication Date: 2020-12-01
- Inventor: Semih Esenlik , Zhijie Zhao , Anand Meher Kotra , Han Gao
- Applicant: Huawei Technologies Co., Ltd.
- Applicant Address: CN Shenzhen
- Assignee: Huawei Technologies Co., Ltd.
- Current Assignee: Huawei Technologies Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Agency: Leydig, Voit & Mayer, Ltd.
- Priority: WOPCT/EP2017/066342 20170630
- Main IPC: H04N19/523
- IPC: H04N19/523 ; H04N19/105 ; H04N19/139 ; H04N19/513 ; H04N19/533 ; H04N19/56 ; H04N19/573 ; H04N19/109 ; H04N19/577

Abstract:
A method and system for motion vector refinement in a search space for multi-reference inter-prediction are provided. Two or more reference pictures are selected, one of those used for motion vector refinement. Based on an initial estimate of a motion vector to the reference picture for motion vector refinement, a search space in this reference image is constructed. Using template matching, the first motion vector is refined. The second motion vector to another reference picture is calculated using its initial estimate, the initial estimate of the first motion vector and the refined first motion vector. The search spaces used in template matching in different iterations overlap.
Public/Granted literature
- US20200137416A1 OVERLAPPED SEARCH SPACE FOR BI-PREDICTIVE MOTION VECTOR REFINEMENT Public/Granted day:2020-04-30
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