Self-adapting method and apparatus for forecasting frame

Abstract

The embodiment of the invention discloses a self-adaptable prediction method, comprising the steps as follows: block division is carried out on micro-blocks required to be predicted in frame by a plurality of block division methods; a plurality of prediction modes are used to predict each sub-block in each block division result, thus gaining the sub-block residue of the current sub-block; according to the type of the sub-block, a plurality of conversion types are selected to convert the residues of each sub-block, thus gaining the ratio of bit rate and distortion of the current sub-block; the micro-block is predicted according to the minimum ratio of the bit and the distortion out of all bit rate / distortion ratios, the prediction mode and the conversion method. The embodiment of the invention discloses a self-adaptable prediction device which comprises a block division module, a prediction module, a conversion module, a selection module and a frame prediction module; the method and the device can smartly carry out the coding in frames or between frames of the micro-blocks, adapt for the local vein statistical characteristics of the micro-block better and improve the coding efficiency.

Description

technical field [0001] The present invention relates to video coding technology, in particular to an adaptive frame prediction method and device. Background technique [0002] With the rapid development and wide application of multimedia technology and network technology, more and more video data are transmitted through the network. Since the original video data requires a huge bandwidth and has great redundancy, the video data is usually encoded and compressed before being transmitted. In video coding technology, in order to improve the compression efficiency, an input frame of video image is usually divided into multiple macroblocks, and each macroblock is predicted, transformed, quantized, and coded. Wherein, prediction includes intra-frame prediction and inter-frame prediction, and intra-frame prediction can remove spatial redundancy, while inter-frame prediction can remove temporal redundancy. [0003] The inter-frame prediction is a technique for performing image pre...

AI Technical Summary

Problems solved by technology

Although the KL transform method of bidirectional intra-frame prediction replaces the traditional IDCT, since the sub-blocks generated by different block division methods have different energy distributions, if only a single transform method is used, the coding efficiency will not be high

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