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Optical Engineering

Universal deblurring method for real images using transition region
Author(s): Hanyu Hong; Liangcheng Li; Tianxu Zhang; In Kyu Park
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Paper Abstract

In this paper, we present a universal deblurring method for real images without prior knowledge of the blur source. The proposed method uses the transition region of the blurred image to estimate the point spread function (PSF). It determines the main edges of the blurred image with high edge measures based on the difference of Gaussians (DoG) operator. Those edge measures are used to predict the transition region of the sharp image. By using the transition region, we select the pixels of the blurred image to form a series of equations for calculating the PSF. In order to overcome noise disturbance, the optimal method based on the anisotropic adaptive regularization is used to estimate the PSF, in which the constraints of non-negative and spatial correlations are incorporated. Once the PSF is estimated, the blurred image is effectively recovered by employing nonblind restoration. Experimental results show that the proposed method performs effectively for real images with different blur sources.

Paper Details

Date Published: 19 April 2012
PDF: 11 pages
Opt. Eng. 51(4) 047006 doi: 10.1117/1.OE.51.4.047006
Published in: Optical Engineering Volume 51, Issue 4
Show Author Affiliations
Hanyu Hong, Wuhan Institute of Technology (China)
Liangcheng Li, Wuhan Institute of Technology (China)
Tianxu Zhang, Huazhong Univ. of Science and Technology (China)
In Kyu Park, Inha Univ. (Korea, Republic of)

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