Texas Instruments Incorporated
Method and system for video picture intra-prediction estimation

Abstract:

Several systems and methods for intra-prediction estimation of video pictures are disclosed. In an embodiment, the method includes accessing four `N.times.N` pixel blocks comprising luma-related pixels. The four `N.times.N` pixel blocks collectively configure a `2N.times.2N` pixel block. A first pre-determined number of candidate luma intra-prediction modes is accessed for each of the four `N.times.N` pixel blocks. A presence of one or more luma intra-prediction modes that are common among the candidate luma intra-prediction modes of at least two of the four `N.times.N` pixel blocks is identified. The method further includes performing, based on the identification, one of (1) selecting a principal luma intra-prediction mode for the `2N.times.2N` pixel block and (2) limiting a partitioning size to a `N.times.N` pixel block size for a portion of the video picture corresponding to the `2N.times.2N` pixel block.