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Perceived stereoscopic image quality objective evaluation method

A technique of stereoscopic image and objective evaluation, applied in the field of image processing

Inactive Publication Date: 2015-11-11
TIANJIN UNIV
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Problems solved by technology

[0004] The present invention aims to solve the defects of the existing image evaluation technology, use the contrast sensitivity function to filter out the pixels that cannot be detected, and use the threshold value to judge whether each pixel in each band-pass image is covered, so as to realize the contrast masking Effect modeling, effectively improving the consistency between objective evaluation results and human subjective feelings
Accurate assessment of stereoscopic image quality

Method used

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  • Perceived stereoscopic image quality objective evaluation method

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Embodiment Construction

[0033] The method will be described in detail below in conjunction with the technical solution.

[0034] The reference experimental materials used in this design are all taken from the stereo information database provided by the Institute of Broadband Wireless Communication and Stereo Imaging. A total of 6 uncompressed and unnoised original images in the image database are selected, which are the standard stereo material "boy", "family", "flower", "girl", "river", "tree", the resolution is 1280*1024, such as Figure 1-6 shown. Using MATLAB to compress and add noise to 6 original images in different degrees, a total of 270 distorted images were obtained, and all distorted images were subjectively evaluated, and the mean opinion value (Mean OpinionScore, MOS) was recorded to verify the correlation between the subjective and objective scores of the stereoscopic images sex. The stereoscopic imaging device used in the subjective experiment of this method is "3DWINDOWS-19A0" from ...

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Abstract

The invention relates to a perceived stereoscopic image quality objective evaluation method. The method comprises the following steps of acquiring the perceived brightness maps of a reference image and a distorted image respectively; making the perceived brightness maps of the reference image and the distorted image respectively decomposed into five bandpass images by using a logarithmic cosine filter set; screening the distorted image pixel points whose differences with pixel points of the reference image cannot be perceived; using a contrast sensitivity function to create each channel threshold and judging the covered pixel points in the bandpass images of the reference image and the distorted image; respectively calculating the evaluating indexes of left and right viewpoint qualities and further using a mean value method to acquire a stereoscopic image quality evaluating index. By means of the method, accurate evaluation on the stereoscopic image quality can be performed.

Description

technical field [0001] The invention belongs to the field of image processing, and relates to an image quality evaluation method, in particular to an objective evaluation method for perceiving stereoscopic image quality. Background technique [0002] In recent years, with the rapid development of image coding technology and stereoscopic display technology, stereoscopic image processing technology has received more and more attention, and has gradually become a research hotspot in related fields at home and abroad. Compared with the visual experience brought by flat images, stereoscopic images are superior, bringing people a more realistic feeling and a shocking sense of presence. However, compared with planar images, the data space occupied by stereo images in the process of acquisition, transmission and storage is greatly increased. How to ensure the quality of stereo images under the premise of reducing the data space occupation will directly affect the stereo image proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00H04N13/00
Inventor 李素梅刘富岩佟晓煦侯春萍
Owner TIANJIN UNIV
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