Patent ID: 9723326
Date: 2017-08-01
CPC Classifications: H04N

Claim:
1. An image encoding method for encoding a picture based on a coding standard, comprising: dividing, using a processor, a current picture into a plurality of processing blocks which are processing units for intra prediction; and selecting, using the processor, for each of the plurality of processing blocks, one of a plurality of intra prediction modes, and performing intra prediction according to the selected intra prediction mode, wherein, in the coding standard, an intra prediction mode for a processing block at a predetermined fixed position can be one of a DC prediction mode, a Planar prediction mode, a first reference mode in which a processing block located at a lower left of a current processing block to be processed is referred to, or a second reference mode in which a processing block located left of, above, or upper-right of, a current processing block to be processed is referred to, and wherein in the selecting, an intra prediction mode for a processing block at the predetermined fixed position is selected from only the DC prediction mode, the Planar prediction mode, or the second reference mode.