Forecasting encoding/decoding method and apparatus between frames

Abstract

The embodiment of the invention discloses a prediction coding and decoding method between frames, comprising the steps as follows: a coding end determines the coding type and carries out coding operation by comparing the gained template match movement vector of the current block with the movement vector prediction value; a decoding end receives code streams coming from the coding end and determines the decoding type and carries out the decoding operation by comparing the gained template match movement vector of the current block and the movement vector prediction value. The embodiment of the invention also discloses a coding device and a decoding device used for prediction between frames. The method and the device can save code rate excellently during the prediction process between frames.

Description

technical field [0001] The present invention relates to video encoding technology, in particular to an inter-frame predictive encoding and decoding method and device. Background technique [0002] In video coding based on hybrid coding technology, inter-frame prediction technology has been widely used. The so-called inter-frame prediction refers to the technology of image prediction based on adjacent frames by using the time redundancy of data, that is, the correlation of pixels between adjacent frames in a moving image sequence. According to statistics, in the two frames of moving images before and after, only no more than 10% of the pixels have luminance values ​​that change more than 2%, and chrominance values ​​change even less. [0003] At present, the change of inter-frame prediction technology based on motion compensation is reflected in the difference of reference frame number, reference direction, pixel precision and block size division. Its main technical points ...

AI Technical Summary

Problems solved by technology

However, after adopting this method, since a specific macroblock type is introduced to transmit the identification information of the template matching method, an additional code rate is increased

[0017] It can be seen that the existing inter-frame prediction methods will increase the bit rate to varying degrees during the encoding process due to various reasons.

Images