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Combining Poisson singular integral and total variation prior models in image restoration

Journal Article · · Signal Processing
 [1];  [2];  [3];  [2];  [3];  [4]
  1. Univ. de Granada (Spain); Northwestern University
  2. Univ. Autonoma de Ciudad Juarez, Chihuahua (Mexico)
  3. Univ. de Granada (Spain)
  4. Northwestern Univ., Evanston, IL (United States)

In this study, a novel Bayesian image restoration method based on a combination of priors is presented. It is well known that the Total Variation(TV) image prior preserves edge structures while imposing smoothness on the solutions.However,it tends to oversmooth textured areas.To alleviate this problem we propose to combine the TV and the Poisson Singular Integral(PSI)models, which,as we will show, preserves the image textures. The PSI prior depends on a parameter that controls the shape of the filter. A study on the behavior of the filter as a function of this parameter is presented. Our restoration model utilizes a bound for the TV image model based on the majorization–minimization principle,and performs maximum a posteriori Bayesian inference. In order to assess the performance of the proposed approach,in the experimental section we compare it with other restoration methods.

Research Organization:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Nonproliferation and Verification Research and Development (NA-22)
DOE Contract Number:
NA0002520
OSTI ID:
1488405
Journal Information:
Signal Processing, Journal Name: Signal Processing Journal Issue: C Vol. 103; ISSN 0165-1684
Publisher:
Elsevier
Country of Publication:
United States
Language:
English

References (20)

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Variational image restoration based on Poisson singular integral and curvelet-type decomposition space regularization conference September 2011
Singular Integrals, Image Smoothness, and the Recovery of Texture in Image Deblurring journal January 2004

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