Patent ID: 11877006
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A non-transitory storage medium storing an encoded bitstream for video signals, the encoded bitstream comprises data for obtaining:
a reconstructed luma block down-sampled to obtain a down-sampled luma block, the reconstructed luma block corresponding to a chroma block;
a max luma value and a min luma value determined based on first down-sampled samples of reconstructed top neighboring luma samples that are above the reconstructed luma block or second down-sampled samples of reconstructed left neighboring luma samples within N columns which are left of the reconstructed luma block, wherein 0<N<=3 and N is a positive integer, wherein the reconstructed top neighboring luma samples are within a single row being adjacent to the reconstructed luma block;
a first chroma value and a second chroma value determined based on reconstructed neighboring chroma samples of the chroma block, wherein the first chroma value and the second chroma value are respectively associated with the max luma value and the min luma value;
parameters of a linear model (LM) derived based on the max luma value, the min luma value, the first chroma value, and the second chroma value; and
predicted chroma values of the chroma block generated based on the parameters of the LM and the down-sampled luma block.