INTRA PREDICTION ENCODING CONTROL METHOD AND DEVICE, ITS PROGRAM, AND STORAGE MEDIUM CONTAINING PROGRAM

摘要

Provided is an intra prediction encoding control method used in intra prediction encoding having a plurality of prediction modes and prediction block sizes and switching them upon encoding. The method includes: a step of calculating a flatness indicating the flatness of an encoding object region; a step of deciding the prediction block size used in the intra prediction encoding of the encoding object region in accordance with the calculated flatness; and a step of selecting a prediction mode used for the intra prediction encoding of the encoding object region with the decided prediction block size.