Method for objectively evaluating quality of three-dimensional image based on three-dimensional structural similarity

Abstract

The invention discloses a method for objectively evaluating the quality of a three-dimensional image based on three-dimensional structural similarity. The method comprises the following steps of: calculating to obtain parallax space maps of an initial undistorted three-dimensional image and a distorted three-dimensional image to be evaluated respectively, calculating to obtain the three-dimensional structural similarity between the parallax space map of the initial undistorted three-dimensional image and the parallax space map of the distorted three-dimensional image to be evaluated, and obtaining the objective evaluation predicted value of the quality of the distorted three-dimensional image to be evaluated. The method has the advantages that the obtained three-dimensional structural similarity can reflect the influence of different parallaxes on the three-dimensional image well, and only a unit with the low three-dimensional structural similarity can be evaluated, so that the objective evaluation result and the correlation of subjective perception are effectively improved.

Description

technical field [0001] The invention relates to an image quality evaluation method, in particular to an objective evaluation method of stereoscopic image quality based on three-dimensional structure similarity. Background technique [0002] With the rapid development of image coding technology and stereoscopic display technology, stereoscopic image technology has received more and more attention and applications, and has become a current research hotspot. Stereoscopic image technology utilizes the binocular parallax principle of the human eye. Both eyes independently receive left and right viewpoint images from the same scene, and form binocular parallax through brain fusion, so as to enjoy a stereoscopic image with a sense of depth and realism. Due to the impact of acquisition system, storage compression and transmission equipment, stereoscopic images will inevitably introduce a series of distortions. Compared with single-channel images, stereoscopic images need to ensure t...

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Problems solved by technology

[0003] The current objective evaluation method for stereoscopic image quality is to directly apply the planar image quality evaluation method to evaluate the stereoscopic image quality, or to evaluate the depth perception of stereoscopic images by evaluating the quality of the disparity map. However, the process of fusion of stereoscopic images to produce stereoscopic It is not an extension of the simple planar image quality evaluation method, and the human eye does not directly view the disparity map, and it is not very accurate to evaluate the depth perception of the stereoscopic image with the quality of the disparity map

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