Title:
ILLUMINATION COMPENSATION-BASED IMAGE ENCODING/DECODING METHOD AND APPARATUS, AND RECORDING MEDIUM STORING BITSTREAM
Document Type and Number:
WIPO Patent Application WO/2024/010291
Kind Code:
A1
Abstract:
An image encoding/decoding method and apparatus are provided. The image decoding method according to the present disclosure comprises the steps of: obtaining information about illumination compensation for the present block; deriving an illumination compensation parameter for each of two or more illumination compensation candidate modes for the illumination compensation; obtaining an illumination-compensated first adjacent region by applying the illumination compensation on a predetermined first adjacent region adjacent to a reference block of the present block on the basis of the illumination compensation parameter; obtaining a final error value for each of the illumination compensation candidate modes on the basis of a sample value in the illumination-compensated first adjacent region and an error of a sample value in a predetermined second adjacent region adjacent to the present block; rearranging the illumination compensation candidate modes on the basis of the final error value; and determining an illumination compensation candidate mode for the present block on the basis of the rearranged illumination compensation candidate modes and the information about the illumination compensation, wherein the first adjacent region and the second adjacent region may be at corresponding locations.
Inventors:
NAM JUNG HAK (KR)
LIM JAEHYUN (KR)
PARK NAE RI (KR)
JANG HYEONG MOON (KR)
LIM JAEHYUN (KR)
PARK NAE RI (KR)
JANG HYEONG MOON (KR)
Application Number:
PCT/KR2023/009192
Publication Date:
January 11, 2024
Filing Date:
June 30, 2023
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04N19/513; H04N19/105; H04N19/109; H04N19/186; H04N19/70
Foreign References:
| JP2021518998A | 2021-08-05 | |||
| KR20200100656A | 2020-08-26 | |||
| KR20210113188A | 2021-09-15 |
Other References:
C.-C. CHEN (QUALCOMM), H. HUANG (QUALCOMM), Y. ZHANG, Z. ZHANG, Y.-J. CHANG, V. SEREGIN (QUALCOMM), M. KARCZEWICZ (QUALCOMM): "Non-EE2: Template matching based reordering for GPM split modes", 25. JVET MEETING; 20220112 - 20220121; TELECONFERENCE; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), 13 January 2022 (2022-01-13), XP030300480
Z. XIE (OPPO), Y. YU (OPPO), H. YU (OPPO), D. WANG (OPPO): "Non-EE2: Improvement on Local Illumination Compensation", 26. JVET MEETING; 20220420 - 20220429; TELECONFERENCE; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), 20 April 2022 (2022-04-20), XP030300995
Z. XIE (OPPO), Y. YU (OPPO), H. YU (OPPO), D. WANG (OPPO): "Non-EE2: Improvement on Local Illumination Compensation", 26. JVET MEETING; 20220420 - 20220429; TELECONFERENCE; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), 20 April 2022 (2022-04-20), XP030300995
Attorney, Agent or Firm:
SUNG, Byung Kee (KR)
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