Invention Grant
- Patent Title: Deriving offsets in cross-component transform coefficient level reconstruction
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Application No.: US17939199Application Date: 2022-09-07
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Publication No.: US12047589B2Publication Date: 2024-07-23
- Inventor: Madhu Peringassery Krishnan , Xin Zhao , Shan Liu
- Applicant: Tencent America LLC
- Applicant Address: US CA Palo Alto
- Assignee: TENCENT AMERICA LLC
- Current Assignee: TENCENT AMERICA LLC
- Current Assignee Address: US CA Palo Alto
- Agency: Crowell & Moring LLP
- Main IPC: H04N19/18
- IPC: H04N19/18 ; H04N19/12 ; H04N19/124 ; H04N19/176 ; H04N19/186 ; H04N19/60 ; H04N19/70

Abstract:
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.
Public/Granted literature
- US20230099329A1 DERIVING OFFSETS IN CROSS-COMPONENT TRANSFORM COEFFICIENT LEVEL RECONSTRUCTION Public/Granted day:2023-03-30
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