Motion vector prediction value list construction method and video encoding and decoding method and device

Abstract

Disclosed are a motion vector predictor list construction method, a video coding and decoding method, and relevant devices. The motion vector predictor list construction method comprises: acquiring N motion vector predictors corresponding to a first picture block; and constructing a motion vector predictor list corresponding to the first picture block, wherein the motion vector predictor list records the N motion vector predictors, the N motion vector predictors comprise a zero motion vector predictor, a temporal motion vector predictor and M spatial motion vector predictors, the positions of the zero motion vector predictor and the M spatial motion vector predictors in the motion vector predictor list are located before the temporal motion vector predictor, a reference picture to which the zero motion vector predictor points comes from a picture layer different from a picture layer where the first picture block is located, and in the motion vector predictor list, the higher the position is, the smaller a corresponding index number is. The solution provided in the embodiments of the present invention facilitates improving video compressed coding performance.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method for constructing a motion vector predictor list and a video encoding and decoding method and device. Background technique [0002] With the development of photoelectric acquisition technology and the growing demand for high-definition digital video, the amount of video data is increasing. The limited heterogeneous transmission bandwidth and diversified video applications continue to put forward higher requirements for video coding efficiency. The formulation of High Efficient Video Coding (HEVC, High Efficient Video Coding) standards was initiated as needed. [0003] The basic principle of video coding and compression is to use the correlation between space domain, time domain and code words to remove redundancy as much as possible. The current popular practice is to use a block-based hybrid video coding framework to achieve video coding compression through ste...

AI Technical Summary

Problems solved by technology

Research and practice have found that the existing technology cannot well adapt to the characteristics of SVC coding, which limits the improvement of compression coding performance

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