Intra prediction mode coding with directional partitions

摘要

A video coder can determine a most probable mode for a block of video data using non-square partitions based on the direction of the non-square partitions. When the direction of the non-square partitions is vertical, an intra prediction mode of a left-neighboring block can be selected as the most probable intra prediction mode, and when the direction of the non-square partitions is horizontal, an intra prediction mode of an above-neighboring block can be selected as the most probable intra prediction mode.

主权项

1. A method of encoding video data, the method comprising:
partitioning a block of video data into a plurality of partitions, wherein the plurality of partitions comprise a rectangular, non-square partition, wherein the rectangular, non-square partition comprises an N×M partition, wherein N and M are integer numbers of pixels; determining a most probable intra prediction mode for the rectangular, non-square partition based at least in part on a partition direction of the rectangular, non-square partition, wherein the partition direction comprises one of a horizontal direction where N is greater than M or a vertical direction where N is less than M; and encoding data representative of an actual intra prediction mode for the rectangular, non-square partition based at least in part on the determined most probable intra prediction mode, wherein encoding the data representative of the actual intra prediction mode comprises encoding a value for a flag, wherein the value of the flag is indicative of whether the actual intra prediction mode is the same as the most probable intra prediction mode.