Stereoscopic image objective quality evaluation method based on physiological and psychological stereoscopic vision

A stereoscopic image and stereoscopic vision technology, applied in the field of image processing, can solve the problems of objective quality evaluation that does not involve stereoscopic vision information, the inability to apply all visual models, and small viewpoint parallax, etc.

Inactive Publication Date: 2012-10-10
TIANJIN UNIV
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Problems solved by technology

However, most of them are aimed at planar images and do not involve the objective quality evaluation of stereoscopic visual information
When evaluating stereoscopic information, these visual models cannot be fully applied; stereoscopic images are different from planar images,

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  • Stereoscopic image objective quality evaluation method based on physiological and psychological stereoscopic vision
  • Stereoscopic image objective quality evaluation method based on physiological and psychological stereoscopic vision
  • Stereoscopic image objective quality evaluation method based on physiological and psychological stereoscopic vision

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Embodiment Construction

[0059] The objective stereoscopic image quality evaluation method that comprehensively considers physiological and psychological stereopsis mainly includes feature information extraction and effective representation of stereoscopic images, stereoscopic feature modeling, stereoscopic image quality evaluation criteria, and subjective evaluation feedback correction.

[0060] Firstly, the absolute difference information of the original stereo image and the distorted stereo image is extracted, and after the absolute difference information is gray-scale clustered, the weighted average structural similarity function is used to calculate the difference information after gray-scale clustering, and the final evaluation index is obtained.

[0061] The first step is to take a pair of viewpoints with binocular parallax and calculate the absolute difference Diff between the left and right views 0 =|f(x 1 )-f(x 2 )|. Among them, f(x 1 ), f(x 2 ) are the pixel values ​​for the left and ri...

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Abstract

The invention belongs to the field of image process, and provides a quality evaluation method capable of comprehensively considering physiological and psychological stereoscopic vision clues, and can effectively realize objective quality evaluation on a stereoscopic image. According to the technical scheme of the invention, a stereoscopic image objective quality evaluation method based on physiological and psychological stereoscopic vision comprises the following steps of: a first step of calculating absolute difference of a left view and a right view; a second step of converting the absolute difference into a grey-scale image which is taken as a characteristic parameter capable of representing the quality of a stereoscopic image; a third step of carrying out K-means cluster segmentation on a converted grey-scale image; a fourth step of differentially treating by distributing different weights for different class diagrams; a fifth step of calculating a WMSSIM value between a class diagram of the original stereoscopic image and a class diagram of a distortion stereoscopic image; and a sixth step of finally obtaining stereoscopic image quality evaluation index 3DM. The method is mainly applied to stereoscopic image objective quality evaluation.

Description

technical field [0001] The invention belongs to the field of image processing, in particular to an objective quality evaluation system for stereoscopic images, in particular to an objective quality evaluation method for stereoscopic images based on physiological and psychological stereoscopic vision. Background technique [0002] At present, the quality evaluation methods of digital plane images can be divided into two categories: subjective evaluation and objective evaluation. The subjective quality evaluation process needs to select a large number of observers, and each observer has to conduct a large number of repeated experiments on multiple test images, which is time-consuming and expensive, and is susceptible to the complexity and differences of the individual psychological and physiological changes of the testees. Influence, the operation is difficult and cannot achieve real-time performance. Therefore, how to establish an objective quality evaluation method consiste...

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Application Information

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IPC IPC(8): G06T7/00
Inventor 沈丽丽张晶侯春萍
Owner TIANJIN UNIV
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