Spatial prediction method and spatial prediction apparatus

摘要

To improve the efficiency of spatial prediction for a pixel block. The present invention relates to a method for performing spatial prediction of a current block using a plurality of spatial prediction modes based on adjacent pixels of the current block, which is a pixel block of an image, and the method includes a spatial prediction mode. A step (E3) of determining a prediction block of the current block according to each of the above, and a step (E4) of selecting any of the prediction blocks according to a predetermined criterion. According to the present invention, before performing the above steps, it is checked whether some of them are redundant in the spatial prediction mode (E1). If such a redundancy mode is detected, one of them is replaced by an additional mode that is different from the other spatial prediction mode. [Selection] Figure 2