Three-dimensional image quality objective evaluation method based on zero watermark
A technology for objective quality evaluation and stereoscopic images, applied in image analysis, image data processing, image data processing and other directions, it can solve the problem of being easily restricted and affected by other factors, not suitable for engineering applications, and time-consuming for subjective quality evaluation of stereoscopic images. labor, etc.
Inactive Publication Date: 2014-01-29
NINGBO UNIV
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However, the subjective quality evaluation of stereoscopic images is time-consuming and laborious, and is easily restricted and affected by other factors, so it is not suitable for engineering applications
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[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0044] The present invention proposes a partial reference stereoscopic image quality objective evaluation method based on zero watermark, which respectively evaluates the quality of the left viewpoint image and the right viewpoint image and the stereoscopic perception effect of the stereoscopic image, and compares the evaluation results of these two parts Combined to obtain the final objective evaluation result of the stereoscopic image quality. figure 1Provided the overall realization block diagram of the inventive method, it mainly comprises the following steps:
[0045] ① Order S org To be the original undistorted stereo image, let 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 ima...
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The invention discloses a three-dimensional image quality objective evaluation method based on a zero watermark. The three-dimensional image quality objective evaluation method comprises the following steps of: generating a vision point zero watermark reflecting an image vein structure by utilizing wavelet coefficient relation of sub-bands with the same space frequency in horizontal and vertical directions after a left vision point image and a right vision point image are subjected to wavelet decomposition; simultaneously, generating a vision difference zero watermark reflecting three-dimensional perceived quality by utilizing size relation of vision difference vectors of the left vision point image and the right vision point image; and obtaining a three-dimensional image quality objective evaluation value by integrating recovery rates of the vision point zero watermark and the vision difference zero watermark. The three-dimensional image quality objective evaluation method based on the zero watermark, disclosed by the invention, combines human eye vision characteristics, utilizes a vision comparison sensitive function and objectively evaluate the three-dimensional perception quality, thus the consistency of the objective evaluation result of the method disclosed by the invention and a human subjective evaluation result is better; in addition, the method only needs a part of information of an original undistorted three-dimensional image, belongs to a partial reference type image quality evaluation model, and is suitable for a bandwidth-limited multimedia application system.
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 zero watermark. Background technique [0002] With the rapid development of Internet and multimedia technology, stereoscopic image processing technology is gradually applied to many fields such as 3D video conferencing system, remote industrial control, virtual reality, distance education and medical care, automatic navigation and consumer electronics. In various stereoscopic image compression or transmission systems, it is often necessary to evaluate the pros and cons of the stereoscopic image compression or transmission system or to adjust related parameters according to the quality of the stereoscopic image after compression or transmission to achieve better compression or transmission effects. Since humans are the final recipients of stereoscopic images, human subjective quality evaluation of stereoscop...
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IPC IPC(8): G06T7/00G06T1/00
Inventor 蒋刚毅周武杰郁梅彭宗举邵枫
Owner NINGBO UNIV