TY - GEN
T1 - Optimized Adaptive Loop Filter Based on the Refined Adaptation Parameter Sets in H.266/VVC
AU - Liu, Jiaqi
AU - Huo, Junyan
AU - Zou, Wenjie
AU - Yang, Fuzheng
AU - Wan, Shuai
AU - Huang, Cheng
N1 - Publisher Copyright:
© 2026 IEEE.
PY - 2026
Y1 - 2026
N2 - Adaptive loop filter (ALF), including luma ALF, chroma ALF, and cross-component adaptive loop filter (CCALF), has been adopted in H.266/versatile video coding (VVC). It can enhance the quality of reconstructed videos based on the Wiener filtering principle. In-depth analyses reveal that the efficiency of chroma ALF and CCALF is significantly lower than that of luma ALF, primarily due to the insufficient number of chroma-related filter sets in the adaptation parameter sets (APSs). To address this limitation, this paper focuses on the efficient design of ALF APSs. Specifically, we propose a luma-guided rate-distortion optimization (RDO) criterion for chroma components to improve the efficiency of the new ALF APS. Furthermore, an improved ALF APS list management is introduced to extend the lifetime of chroma-related filter sets in the ALF APS list.
AB - Adaptive loop filter (ALF), including luma ALF, chroma ALF, and cross-component adaptive loop filter (CCALF), has been adopted in H.266/versatile video coding (VVC). It can enhance the quality of reconstructed videos based on the Wiener filtering principle. In-depth analyses reveal that the efficiency of chroma ALF and CCALF is significantly lower than that of luma ALF, primarily due to the insufficient number of chroma-related filter sets in the adaptation parameter sets (APSs). To address this limitation, this paper focuses on the efficient design of ALF APSs. Specifically, we propose a luma-guided rate-distortion optimization (RDO) criterion for chroma components to improve the efficiency of the new ALF APS. Furthermore, an improved ALF APS list management is introduced to extend the lifetime of chroma-related filter sets in the ALF APS list.
UR - https://www.scopus.com/pages/publications/105041001310
U2 - 10.1109/DCC66757.2026.00080
DO - 10.1109/DCC66757.2026.00080
M3 - 会议稿件
AN - SCOPUS:105041001310
T3 - Data Compression Conference Proceedings
SP - 453
BT - Proceedings - DCC 2026
A2 - Bilgin, Ali
A2 - Fowler, James E.
A2 - Serra-Sagrista, Joan
A2 - Ye, Yan
A2 - Storer, James A.
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2026 Data Compression Conference, DCC 2026
Y2 - 24 March 2026 through 27 March 2026
ER -