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Three-dimensional image quality objective assessment method based on three-dimensional gradient amplitude

An objective quality evaluation and stereoscopic image technology, applied in image analysis, image data processing, instruments, etc., can solve problems such as lack, achieve strong stability, improve correlation, and avoid the effects of parallax estimation operations

Active Publication Date: 2014-05-28
郎溪品旭科技发展有限公司
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Problems solved by technology

However, there is currently a lack of effective objective evaluation methods to evaluate the quality of stereoscopic images.

Method used

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  • Three-dimensional image quality objective assessment method based on three-dimensional gradient amplitude
  • Three-dimensional image quality objective assessment method based on three-dimensional gradient amplitude
  • Three-dimensional image quality objective assessment method based on three-dimensional gradient amplitude

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Embodiment Construction

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0044] A method for objective evaluation of stereoscopic image quality based on three-dimensional gradient amplitude proposed by the present invention, its overall realization block diagram is as follows figure 1 As shown, it specifically includes the following steps:

[0045] ① Order S org represents the original undistorted stereo image, let S dis represents the distorted stereo image to be evaluated, and S org The left view image of is denoted as {L org (x,y)}, the S org The right view image of is denoted as {R org (x,y)}, the S dis The left view image of is denoted as {L dis (x,y)}, the S dis The right view image of is denoted as {R dis (x, y)}, where (x, y) represents the coordinate position of the pixel in the left-viewpoint image and the right-viewpoint image, 1≤x≤W, 1≤y≤H, W represents the left-viewpoint image and the right-vi...

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Abstract

The invention discloses a three-dimensional image quality objective assessment method based on a three-dimensional gradient amplitude. Firstly, a parallax error space picture of an undistorted three-dimensional image and a parallax error space picture of a distorted three-dimensional image to be assessed are calculated respectively, then a corresponding three-dimensional gradient amplitude is obtained by calculating the horizontal gradient, the vertical gradient and the view point gradient of each pixel point in the parallax error space picture of the undistorted three-dimensional image, a corresponding three-dimensional gradient amplitude is obtained by calculating the horizontal gradient, the vertical gradient and the view point gradient of each pixel point in the parallax error space picture of the distorted three-dimensional image to be assessed, and ultimately, according to the three-dimensional gradient amplitudes of each pixel point in the two parallax error space pictures, an image quality objective assessment prediction value of the distorted three-dimensional image to be assessed is obtained. The method has the advantages that the obtained three-dimensional gradient amplitudes are very stable and can well reflect quality changing conditions of the three-dimensional images and accordingly correlation of an objective assessment result and subjective perception can be effectively improved.

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 three-dimensional gradient amplitude. Background technique [0002] With the rapid development of image coding technology and stereoscopic display technology, stereoscopic image technology has received more and more attention and applications, and has become a current research hotspot. Stereoscopic image technology utilizes the binocular parallax principle of the human eye. Both eyes independently receive left and right viewpoint images from the same scene, and form binocular parallax through brain fusion, so as to enjoy a stereoscopic image with a sense of depth and realism. Due to the influence of acquisition system, storage compression and transmission equipment, stereoscopic images will inevitably introduce a series of distortions. Compared with single-channel images, stereoscopic images need to ensure ...

Claims

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Application Information

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IPC IPC(8): G06T7/00
Inventor 邵枫段芬芳王珊珊李福翠
Owner 郎溪品旭科技发展有限公司
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