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Title:
APPARATUS AND METHOD FOR CONDITIONAL DECODER-SIDE MOTION VECTOR REFINEMENT IN VIDEO CODING
Document Type and Number:
WIPO Patent Application WO/2020/052654
Kind Code:
A1
Abstract:
A method for inter-prediction of a current image block in a current picture of a video is provided. The method includes determining whether a first temporal distance (such as TD0) is equal to a second temporal distance (such as TD1), wherein the first temporal distance is represented in terms of a difference between a picture order count value of the current picture and a picture order count value of a first reference image; and the second temporal distance is represented in terms of a difference between a picture order count value of a second reference image and the picture order count value of the current picture; and performing no motion vector refinement (DMVR) procedure when it is determined that the first temporal distance (TD0) is not equal to the second temporal distance (TD1). Thus the DMVR procedure is restricted to only the image block with equal-distance references.

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Inventors:
SETHURAMAN SRIRAM (IN)
A JEEVA RAJ (IN)
KOTECHA SAGAR (IN)
Application Number:
PCT/CN2019/105717
Publication Date:
March 19, 2020
Filing Date:
September 12, 2019
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04N19/119
Domestic Patent References:
WO2018092870A12018-05-24
WO2018113658A12018-06-28
Foreign References:
TW201830968A2018-08-16
CN107360433A2017-11-17
CN102123283A2011-07-13
US20180184117A12018-06-28
Other References:
C.-C. CHEN ET AL.: "CE9-related: Harmonization between CE9.2.6 (DMVR with Template-free Bilateral Matching, JVET-K0359) and CE9.2.9 (DMVR with Bilateral Matching, JVET-K0217", 11. JVET MEETING; 20180711 - 20180718, 11 July 2018 (2018-07-11)
S. ESENLIK ET AL.: "CE9: DMVR with Bilateral Matching (Test 2.9", 11. JVET MEETING; 20180711 - 20180718, 10 July 2018 (2018-07-10)
H. CHEN ET AL.: "Description of SDR, HDR and 360° video coding technology proposal by Huawei, GoPro, HiSilicon, and Samsung", 10. JVET MEETING; 10-4-2018 - 20-4-2018; SAN DIEGO, 4 October 2018 (2018-10-04)
See also references of EP 3847807A4
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