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Objective quality evaluation method of asymmetrically distorted stereo images

A technique of stereoscopic image, evaluation method

Active Publication Date: 2015-02-18
深圳云天畅想信息科技有限公司
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Problems solved by technology

Therefore, the existing single-viewpoint visual quality assessment model and the symmetric distortion visual quality assessment method cannot be directly extended to the asymmetric distortion visual assessment method.

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  • Objective quality evaluation method of asymmetrically distorted stereo images
  • Objective quality evaluation method of asymmetrically distorted stereo images
  • Objective quality evaluation method of asymmetrically distorted stereo images

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] An objective quality evaluation method for an asymmetrically distorted stereoscopic image proposed by the present invention, its overall realization block diagram is as follows figure 1 As shown, the processing process is as follows: First, gradient filtering is performed on the four images of the original undistorted stereoscopic image, the left viewpoint image and the right viewpoint image, and the left viewpoint image and the right viewpoint image of the asymmetrically distorted stereoscopic image to be evaluated. and extract the local variance operation to obtain the respective gradient magnitude image and local variance image; secondly, according to the local variance image of the left viewpoint image of the original undistorted stereo image and the left viewpoint image of the asymmetrically distorted stereo image to be evaluated T...

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Abstract

The invention discloses an objective quality evaluation method of asymmetrically distorted stereo images. The method includes: subjecting four images, namely left and right view images of an original stereo image and left and right view images of a stereo image to be evaluated, to gradient filtering and local variance extracting respectively so as to obtain a gradient amplitude image and a local variance image of each image; calculating a left view local variance change-rate image according to the local variance images of the two left view images, and calculating a right view local variance change-rate image according to the local variance images of the two right view images; acquiring a left-right view feature fusion image of the original stereo image and a left-right view feature fusion image of the stereo image to be evaluated; calculating a similarity image of the two left-right view feature fusion images to obtain an image quality objective prediction value of the stereo image to be evaluated. The method has the advantages that stereo visual features of asymmetric distortion are made full use, and relevancy of objective evaluation results and subjective perception is effectively improved.

Description

technical field [0001] The invention relates to a method for evaluating the objective quality of a stereoscopic image, in particular to a method for evaluating the objective quality of an asymmetrically distorted stereoscopic image. Background technique [0002] Since the beginning of the 21st century, with the maturity of stereoscopic image / video system processing technology and the development of computer network and communication technology, people have strong requirements for stereoscopic image / video system. Compared with the traditional single-viewpoint image / video system, the stereoscopic image / video system is more and more popular because it provides depth information to enhance the realism of the image and give users an immersive experience. It is called self-audio The main form of the fourth generation of media after , image and video has aroused extensive attention from academia and industry. However, in order to obtain better stereoscopic presence and visual effe...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T7/593G06T7/97G06T2207/20221
Inventor 周武杰王中鹏李鑫王昕峰邱薇薇鲁琛
Owner 深圳云天畅想信息科技有限公司
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