Full-reference screen image quality evaluation method
A technology of screen image and quality assessment, applied in image analysis, image data processing, instrument, etc.
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[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0048] In order to solve the problem that the evaluation method in the prior art cannot be applied to the quality evaluation of screen images, the present invention provides a full-reference screen image quality evaluation method, based on the gradient magnitude and gradient direction similarity, such as figure 1 As shown, the specific steps are as follows:
[0049] 1) Input a reference screen image r and a distorted screen image d;
[0050] 2) Obtain the gradient magnitude map M of the reference screen image r r' , Gradient pattern O r' , the gradient magnitude map M of the distorted screen image d d' , Gradient pattern O d' ;
[0051] 3) Get the gradient magnitude map M of the reference screen image r r' Gradient magnitude map M with distorted screen image d d' Gradient magnitude similarity; get the gradient direction map O of the ref...
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