Macroblock motion information obtaining method, apparatus and method for determining macroblock encoding mode

Abstract

An embodiment of the invention relates to an obtaining method of movement information of macroblock, a device thereof and a method for determining macroblock coding mode, wherein the obtaining method comprises the following steps: when a reference macroblock is intra-frame mode coding, overleaping the reference macroblock for researching the next reference macroblock which is coded with a non-intra-frame mode, using the obtained macroblock movement information of reference macroblock which is coded with a non-intra-frame mode as the macroblock movement information of present macroblock; or obtaining the macroblock movement information of present macroblock according to the macroblock movement information of macroblock at the circumference of reference macroblock and / or the macroblock movement information of macroblock at the circumference of present macroblock. The embodiment of the invention can obtain the effective macroblock movement information of present macroblock when the reference macroblock in reference image can not provide effective macroblock movement information to the present macroblock thereby increasing the coding efficiency of MVC.

Description

technical field [0001] The invention relates to the technical field of image coding and decoding, in particular to a method and device for acquiring macroblock motion information and a method for judging a macroblock coding mode. Background technique [0002] Multi-view video (Multi-view Video) is a video technology with stereo perception and interactive operation functions. It is a video signal obtained by a group of parallel and converging camera arrays. The realization of multi-view video coding (Multi-view Video Coding, MVC) can be based on the traditional hybrid coding framework, such as: H.264 video coding technology, or based on wavelet coding, distributed coding and other new generation video coding tools. Inter-viewpoint correlation is an important characteristic of multi-viewpoint video sequences. It has a great relationship with camera array form, camera spacing, and distance between cameras and objects, and is directly reflected in the parallax of two images of a...

AI Technical Summary

Problems solved by technology

First, using the derived forward disparity vector (GDV f ) to find the GDV in the forward reference image f The forward reference macroblock pointed to, if the forward reference macroblock is coded in intra frame (Intra) mode, it cannot be the current macroblock MB cur Provide motion information; then use the derived backward disparity vector (GDV b ) to find the GDV in the backward reference image b The backward reference macroblock pointed to by , if the backward reference macroblock is also coded in Intra mode, it cannot be the current macroblock MB cur Motion information is provided. At this time, the current macroblock cannot be coded in the motion information skip mode, which reduces the coding efficiency of MVC.

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