Three-dimensional image objective quality evaluation method

A technology of stereoscopic images and evaluation methods, applied in image analysis, image data processing, instruments, etc., can solve the problems of objective evaluation model not combining human visual characteristics, poor correlation of subjective perception, and no evaluation of stereoscopic perception

Inactive Publication Date: 2010-10-27
NINGBO UNIV
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Problems solved by technology

Compared with the quality evaluation of plane images, there are relatively few studies on the quality evaluation of stereoscopic images at home and abroad. Most of the objective evaluation models do not combine the

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Embodiment Construction

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0041] The method for evaluating the objective quality of the stereoscopic image proposed by the present invention separately evaluates the quality of the left-viewpoint image and the right-viewpoint image and the stereoscopic perception effect of the stereoscopic image, and combines the evaluation results of these two parts to obtain the final evaluation of the stereoscopic image quality result. figure 1 The overall realization block diagram of the method of the present invention is provided, and it specifically comprises the following steps:

[0042] ① Order S org is the original undistorted stereo image, S dis For the distorted stereo image to be evaluated, the original undistorted stereo image S org L org , the original undistorted stereo image S org The right-view image of R org , the distorted stereo image S to be evaluated dis L ...

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Abstract

The invention discloses a three-dimensional image objective quality evaluation method, which comprises the following steps: respectively carrying out wavelet transformation on left view point images and right view point images of undistorted three-dimensional images and distorted three-dimensional images; extracting characteristic values of each sub band; carrying out similarity measurement on the characteristic values; determining the weight factors of each sub band by contrast sensitive functions; then, realizing the evaluation on the three-dimensional sensing quality through evaluating the absolute difference image similarity of left images and right images of the undistorted three-dimensional images and the distorted three-dimensional images; and finally, combining the quality of the left images and the right images and the three-dimensional sensing quality to obtain the final evaluation results of the three-dimensional image quality. The invention has the advantages that the human eye visual characteristics such as human visual sensitivity bandpass, the multi-channel effect, the three-dimensional sensation and the like are utilized, the three-dimensional sensation is simultaneously evaluated on the basis of the evaluation on the quality of the left view point images and the right view point images, the influence of the three-dimensional sensation in the three-dimensional images on the final three-dimensional image quality is merged into an evaluation model, and the correlativity of the objective evaluation results and the subjective sensation is improved.

Description

technical field [0001] The invention relates to an image quality evaluation method, in particular to an objective quality evaluation method of a stereoscopic image. Background technique [0002] Image quality evaluation is a research hotspot in the field of image processing. Image quality is an important indicator for comparing the performance of various image processing algorithms and optimizing system parameters. Therefore, an effective image quality evaluation mechanism is established in the fields of image acquisition, encoding compression, and network transmission. has great significance. With the vigorous development of multimedia technology and Internet technology, stereoscopic video technology is developing rapidly. Compared with traditional media, stereoscopic video can create a more intuitive and realistic scene experience for the public, but it needs to process at least twice as much data. Therefore, while improving the encoding and compression efficiency of ste...

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Application Information

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IPC IPC(8): G06T7/00
Inventor 郁梅王阿红蒋刚毅
Owner NINGBO UNIV
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