(19)
(11) EP 4 552 328 A1

(12)

(43) Date of publication:
14.05.2025 Bulletin 2025/20

(21) Application number: 23834890.8

(22) Date of filing: 05.07.2023
(51) International Patent Classification (IPC): 
H04N 19/51(2014.01)
H04N 19/119(2014.01)
(52) Cooperative Patent Classification (CPC):
H04N 19/54; H04N 19/53
(86) International application number:
PCT/CN2023/105928
(87) International publication number:
WO 2024/008123 (11.01.2024 Gazette 2024/02)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 05.07.2022 US 202263358257 P
13.09.2022 US 202263406122 P
19.12.2022 US 202263433748 P
03.07.2023 US 202318346766

(71) Applicant: Alibaba (China) Co., Ltd.
Binjiang District Hangzhou, Zhejiang 310052 (CN)

(72) Inventors:
  • CHEN, Jie
    Beijing 100102 (CN)
  • LIAO, Ru-Ling
    Beijing 100102 (CN)
  • LI, Xinwei
    Beijing 100102 (CN)
  • YE, Yan
    San Diego, California 92130 (US)

(74) Representative: Patentgruppen A/S 
Aaboulevarden 31, 4th Floor
8000 Aarhus C
8000 Aarhus C (DK)

   


(54) DECODER-SIDE MOTION VECTOR REFINEMENT FOR AFFINE MOTION COMPENSATION