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Boundary Ringing Suppression Method of Image Restoration Based on Sine Integral

A technology of sinusoidal integration and ringing effect, which is applied in image enhancement, image analysis, image data processing, etc., can solve the problems of inability to take into account the restoration of details, large amount of calculation, etc., to increase the amount of calculation, improve the quality of restoration, and reduce ringing. The effect of effect suppression

Inactive Publication Date: 2019-03-22
XIAN UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for suppressing the ringing effect at the boundary of image restoration based on sinusoidal integrals, which solves the problems that the existing ringing effect suppression method has a large amount of calculation and cannot take into account the restoration of details

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  • Boundary Ringing Suppression Method of Image Restoration Based on Sine Integral
  • Boundary Ringing Suppression Method of Image Restoration Based on Sine Integral
  • Boundary Ringing Suppression Method of Image Restoration Based on Sine Integral

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Embodiment Construction

[0052] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to these embodiments.

[0053] The method for suppressing the boundary ringing effect of image restoration based on the sine integral of the present invention, the first part is to estimate the blur kernel in the spectral domain, and extend the image to be processed in a mirror-symmetrical manner according to the size of the estimated blur kernel. The purpose of retaining complete edge information is achieved; the second part is to synthesize the window function in the form of sine function integral, and then restore the image after windowing, so as to achieve the purpose of gradually transitioning the image boundary and suppressing the ringing effect.

[0054] like figure 1 shown, follow the steps below:

[0055] Step 1, input the blurred image f(x, y), such as Figure 2a , 2b shown, Figure 2a ...

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Abstract

The invention discloses a method for suppressing the boundary ringing effect of image restoration based on sinusoidal integration. First, the blurred image f(x,y) is input, the blur kernel h(x,y) is calculated, and then the original blurred image is mirrored. Extend to obtain the extended image g(x,y); then open up the area of ​​the window function w(x,y) according to the size of the extended image g(x,y), and use the sine function integration method to fill the window function; then The extended image g(x,y) and the window function w(x,y) are synthesized to obtain the windowed image g'(x,y); finally, the image restoration algorithm is used to perform the windowed image g'(x,y) Restore and crop out the original image size of M×N in the middle area, which is the final restored image. The present invention suppresses the ringing effect in the restoration of motion blurred images, not only does not extend the image too much to increase the amount of calculation, but also does not ignore the detailed information of the image edge, thereby improving the restoration quality of the blurred image.

Description

technical field [0001] The invention belongs to the technical field of motion blur image processing, and in particular relates to a method for suppressing the ringing effect of image restoration boundary based on sine integral. Background technique [0002] In recent years, motion blurred image restoration technology has become one of the important subjects of image restoration technology research. In the process of collecting image information, due to the relative motion between the photographed object and the photographed object, the image is often blurred. Motion blurred images are ubiquitous in daily life, and some scenes with instantaneous irreproducibility hide or lose valuable momentary information. In order to obtain the effective information hidden in the blurred image, it is necessary to restore the blurred image. When the existing motion-blurred image restoration methods are used to process real images, due to various estimation errors, limitations of image prio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
CPCG06T2207/20201G06T2207/20056G06T5/73
Inventor 赵明华张鑫曹慧张飞飞陈棠石争浩
Owner XIAN UNIV OF TECH
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