Patent ID: 11968388
Assignee: BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The method of claim 1, wherein controlling the internal bit-widths of the PROF derivation process for various representation precisions of internal PROF parameters by applying right-shifting to the internal PROF parameters comprises:
obtaining a horizontal gradient value of a first prediction sample I(i,j) based on a difference between a first prediction sample I(i+1,j) and a first prediction sample I(i−1,j);
obtaining a vertical gradient value of the first prediction sample I(i,j) based on a difference between a first prediction sample I(i,j+1) and a first prediction sample I(i,j−1);
right shifting the horizontal gradient values by a first bit-shift value; and
right shifting the vertical gradient values by the first bit-shift value.