INTRA-FRAME PREDICTION METHOD FOR INTER-FRAME PREDICTION FRAME

摘要

The present invention discloses an intra-frame prediction method for an intra-frame prediction block in an inter-frame prediction frame. When there is an inter-frame prediction block at a lower right side of an intra-frame prediction block, employ a lower right intra-frame prediction method by adjusting encoding and decoding sequences of intra-frame and inter-frame blocks, and perform prediction by using a reconstruction pixel value at the lower right side as a reference pixel point of the intra-frame prediction block. In an encoding stage, first encode each encoding unit, and after the encoding is completed, write all inter-frame prediction block information to a stream. Then, perform secondary encoding on the intra-frame prediction block. In the secondary encoding process, perform lower right intra-frame encoding. After the secondary encoding, write information of the intra-frame prediction block to the stream. In a decoding stage, first complete all inter-frame prediction block decoding, and then perform lower right intra-frame decoding on the intra-frame prediction block. The present invention can improve intra-frame prediction accuracy and encoding efficiency of intra-frame and inter-frame blocks.