Patent ID: 11930167
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A non-transitory computer-readable storage medium storing instructions which when executed by a processor cause the processor to perform:
determining an intra prediction angle corresponding to an intra prediction mode that is a directional intra prediction mode and not a planar intra prediction mode, the intra prediction angle being (i) beyond a bottom left direction 45 degrees from horizontal mode, or (ii) beyond a top right direction 45 degrees from the horizontal mode;
encoding at least one sample of a block based on the intra prediction angle in a bitstream; and
encoding the intra prediction mode in the bitstream based on a relationship between a predetermined plurality of intra prediction modes and a corresponding predetermined plurality of intra prediction angles, the intra prediction mode corresponding to the determined intra prediction angle, wherein
the predetermined plurality of intra prediction modes includes ten intra prediction modes that are beyond the bottom left direction; and
the predetermined plurality of intra prediction modes includes ten intra prediction modes that are beyond the top right direction.