Patent ID: 11930209
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A non-transitory computer-readable storage medium having instructions stored therein, which when executed by one or more processors, cause the one or more processors to perform operations, the operations comprising:
obtaining reconstructed luma samples;
determining maximum and minimum luma sample values based on the reconstructed luma samples;
obtaining a difference of the maximum and minimum luma sample values;
fetching a value out of a lookup table (LUT) by using an index, the index corresponding to a log 2( ) of the difference of the maximum and minimum luma sample values;
obtaining linear model parameters α and β based on the fetched value; and
calculating a predicted chroma sample value by rising the obtained linear model parameters α and β.