Patent ID: 11949902
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. The non-transitory computer-readable storage medium of claim 19, wherein the spatial gradients include a first spatial gradient in the first direction and a second spatial gradient in a second direction that is another one of the x direction and the y direction;
the MVR includes a second component that is in the second direction, an absolute value of the second component of the MVR being one of: (i) 2N2 and (ii) a sum or a difference of 2N2 and 2M2, N2 and M2 being integers; and
the generating the prediction refinement further includes:
determining a first refinement based on one of: (i) shifting the first spatial gradient by IN11 bits and (ii) separately shifting the first spatial gradient by |N1| and |M1| bits respectively and combining the shifted first spatial gradients;
determining a second refinement based on one of: (i) shifting the second spatial gradient by |N2| bits and (ii) separately shifting the second spatial gradient by |N2| and |M2| bits respectively and combining the shifted second spatial gradients; and
generating the prediction refinement based on the first refinement and the second refinement.