Method for determining the relation between movement characteristics and high efficient coding mode in pixel-domain video transcoding

Abstract

The invention discloses a method for deterring the relation between movement characteristics and a high efficient coding mode in pixel-domain video transcoding, which comprises the following steps of:selecting a video array with the typical movement characteristics under a specific resolution factor and a coding mode having the important influence on the improvement of the transcoding quality; analyzing the column diagram of the motion vector amplitude of the typical video array video frame by video frame; traversing various coding mode combinations video frame by video frame and recording the transcoding video quality, selecting the most effective coding mode by a stepwise regression method, and then clustering and simplifying the coding mode, and finally constructing the corresponding relation model between the movement characteristics represented by the column diagram of the motion vector amplitude and the high efficient coding mode. The method provided by the invention causes thatthe relation between the movement characteristics and the high efficient coding mode being difficult to be determined in the first is converted into a classifier, thereby the problem is solved. In the pixel-domain video transcoding process, the relation between the movement characteristics and the high efficient coding mode determined by the invention can increase the transcoding performance.

Description

technical field [0001] The invention relates to video information transcoding technology, in particular to a method for determining the relationship between motion features and high-efficiency coding modes in pixel domain video transcoding, and belongs to the field of computer multimedia technology. In pixel-domain format transcoding, optimizing the selection of encoding modes based on motion features can achieve high transcoding performance, but this requires pre-establishing the relationship between video motion features and optimal encoding modes. The invention provides a method for establishing the relationship between motion features and high-efficiency coding modes in pixel domain video transcoding. Background technique [0002] In video transcoding, at a given output bit rate, transcoding quality and transcoding time are largely contradictory. The so-called improvement of transcoding performance is to reduce the calculation time as much as possible under the conditio...

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