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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 26, Iss. 11 — Nov. 1, 2009
  • pp: 2311–2320

Selection of regularization parameter in total variation image restoration

Haiyong Liao, Fang Li, and Michael K. Ng  »View Author Affiliations


JOSA A, Vol. 26, Issue 11, pp. 2311-2320 (2009)
http://dx.doi.org/10.1364/JOSAA.26.002311


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Abstract

We consider and study total variation (TV) image restoration. In the literature there are several regularization parameter selection methods for Tikhonov regularization problems (e.g., the discrepancy principle and the generalized cross-validation method). However, to our knowledge, these selection methods have not been applied to TV regularization problems. The main aim of this paper is to develop a fast TV image restoration method with an automatic selection of the regularization parameter scheme to restore blurred and noisy images. The method exploits the generalized cross-validation (GCV) technique to determine inexpensively how much regularization to use in each restoration step. By updating the regularization parameter in each iteration, the restored image can be obtained. Our experimental results for testing different kinds of noise show that the visual quality and SNRs of images restored by the proposed method is promising. We also demonstrate that the method is efficient, as it can restore images of size 256×256 in ≈20 s in the MATLAB computing environment.

© 2009 Optical Society of America

OCIS Codes
(100.1830) Image processing : Deconvolution
(100.2000) Image processing : Digital image processing
(100.3020) Image processing : Image reconstruction-restoration

ToC Category:
Image Processing

History
Original Manuscript: April 8, 2009
Revised Manuscript: August 13, 2009
Manuscript Accepted: September 8, 2009
Published: October 9, 2009

Citation
Haiyong Liao, Fang Li, and Michael K. Ng, "Selection of regularization parameter in total variation image restoration," J. Opt. Soc. Am. A 26, 2311-2320 (2009)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-26-11-2311

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