A method for quality assessment of 3D video with reduced reference

Abstract

The invention discloses a method for evaluating the quality of a down reference three-dimensional video. The method comprises the steps that based on a depth image drawing method, a plurality of virtual viewpoint drawing videos are drawn, a four-dimensional space diagram is constructed, since the constructed four-dimensional space diagram considers the influence of color and depth video distortion to the drawing quality of the virtual viewpoints, so that a three-dimensional video is operated and compared directly to better evaluate the influence of the color and the depth video distortion to the drawing quality of the virtual viewpoints, thereby effectively improving the evaluation performance of the three-dimensional video; and a predicted value of objective quality evaluation of a fuzzy three-dimensional video to be evaluated can be calculated by calculating a coefficient distance and frequency ratio distance information according to the DCT coefficient statistical characteristics of different sub-bands and frequency bands of all four-dimensional space bodies in the four-dimensional space diagram, and thus the quality change condition of the three-dimensional video can be well reflected by less information.

Description

technical field [0001] The invention relates to a video quality evaluation method, in particular to a reduced-reference three-dimensional video quality evaluation method. Background technique [0002] Since the beginning of this century, with the digital 2D (two-dimensional) video technology becoming more and more mature, and the rapid development of computer, communication and network technology, people have a strong demand for a new generation of video systems. The current two-dimensional video system is difficult to meet the user's needs for three-dimensionality and viewpoint interaction when representing natural scenes. The 3D video system is more and more popular because it can provide a brand-new visual experience with three-dimensional sense and viewpoint interaction. Application prospect. Compared with stereoscopic video, 3D video based on color plus depth needs to consider the influence of color and depth on virtual viewpoint rendering at the same time. However, t...

AI Technical Summary

Problems solved by technology

Compared with stereoscopic video, 3D video based on color plus depth needs to consider the influence of color and depth on virtual viewpoint rendering at the same time. However, traditional stereoscopic image / video quality evaluation methods usually cannot be directly used to evaluate color, depth or virtual viewpoint video. quality

[0003] For 3D video quality evaluation, if the 3D video quality evaluation method is directly applied to 3D video, that is, the same evaluation method is used for color and depth video, since color video is dominantly affecting the virtual viewpoint, and depth video is invisible. virtual viewpoint, so this will lead to uncontrollable quality of virtual viewpoint rendering; or if the stereoscopic video quality evaluation method is directly applied to the virtual viewpoint video, because the virtual viewpoint has geometric distortion caused by rendering, the traditional stereoscopic video quality evaluation difficult to quantify

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