- 专利标题: Deriving offsets in cross-component transform coefficient level reconstruction
-
申请号: US17939199申请日: 2022-09-07
-
公开(公告)号: US12047589B2公开(公告)日: 2024-07-23
- 发明人: Madhu Peringassery Krishnan , Xin Zhao , Shan Liu
- 申请人: Tencent America LLC
- 申请人地址: US CA Palo Alto
- 专利权人: TENCENT AMERICA LLC
- 当前专利权人: TENCENT AMERICA LLC
- 当前专利权人地址: US CA Palo Alto
- 代理机构: Crowell & Moring LLP
- 主分类号: H04N19/18
- IPC分类号: H04N19/18 ; H04N19/12 ; H04N19/124 ; H04N19/176 ; H04N19/186 ; H04N19/60 ; H04N19/70
摘要:
This disclosure relates generally to video coding and particularly to methods and systems for deriving offsets in cross-component transform coefficient level reconstruction. An example method for decoding a current video block of a video bitstream is disclosed. The method includes receiving a coded video bitstream; extracting, from the coded video bitstream, a first transform coefficient of a first color component for a current video block; determining a second transform coefficient of a second color component for the current video block; deriving an offset value based on at least one of the following: a quantization step size, or the first transform coefficient; adding the offset value to the second transform coefficient to generate a modified second transform coefficient for the second color component; and decoding the current video block based on the first transform coefficient and the modified second transform coefficient of the second color component.
公开/授权文献
信息查询