Patent ID: 11924414
Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The method of claim 1, wherein the luma region comprises a luma block and a neighboring region adjacent to the luma block, and performing down-sampling for the luma region comprises:
when the neighboring region belongs to a same CTU as the luma block, performing down-sampling for the neighboring region adjacent to the luma block based on:

pTopDsY[x]=(pY[2×x][−3]+pY[2×x−1][−2]+4×pY[2×x][−2]+pY[2×x+1][−2]+pY[2×x][−1]+4)>>3.