Patent ID: 11863775
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for video decoding, comprising:
extracting a first transform coefficient of a first color component from a bitstream of a coded video;
extracting a second transform coefficient of a second color component from the bitstream of the coded video;
deriving an offset value for modifying the already extracted second transform coefficient of the second color component based on a magnitude or sign value of the first transform coefficient;
adding the offset value to a magnitude of the second transform coefficient to generate a modified second transform coefficient for the second color component prior to a reconstruction of the second color component; and
reconstructing the coded video at least by performing reverse transform of the first transform coefficient of the first color component and the modified second transform coefficient of the second color component.