| 摘要 |
Disclosed in the present invention are an intra-frame prediction method, which is used for performing prediction on a current block according to pixel values of upper neighboring blocks and left neighboring blocks. The method comprises the following steps: obtaining mapping pixel points in the left neighboring blocks of every reference pixel point in the upper neighboring blocks according to a prediction direction; averaging each reference pixel point in said upper neighboring block and the pixel value of its respective mapping pixel point to get an average pixel value; and by using said average pixel value, performing the prediction on the pixel value of the pixel point in said current block according to said prediction direction. The intra-frame prediction method and device provided by the present invention, which obtaining the pixel value of the reference point for prediction according to the average value of the reference pixel points in the upper neighboring block and the left neighboring block of the current block, fully considerate the spatial distribution characteristic of the pixel, and have better prediction effect relative to the prior art. |
