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The Scientific World Journal
Volume 2014 (2014), Article ID 951842, 8 pages
http://dx.doi.org/10.1155/2014/951842
Research Article

Image Deconvolution by Means of Frequency Blur Invariant Concept

Integrated Lightwave Research Group, Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Lembah Pantai, Kuala Lumpur, Malaysia

Received 10 June 2014; Accepted 29 July 2014; Published 12 August 2014

Academic Editor: Liangti Qu

Copyright © 2014 Barmak Honarvar Shakibaei and Peyman Jahanshahi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Different blur invariant descriptors have been proposed so far, which are either in the spatial domain or based on the properties available in the moment domain. In this paper, a frequency framework is proposed to develop blur invariant features that are used to deconvolve a degraded image caused by a Gaussian blur. These descriptors are obtained by establishing an equivalent relationship between the normalized Fourier transforms of the blurred and original images, both normalized by their respective fixed frequencies set to one. Advantage of using the proposed invariant descriptors is that it is possible to estimate both the point spread function (PSF) and the original image. The performance of frequency invariants will be demonstrated through experiments. An image deconvolution is done as an additional application to verify the proposed blur invariant features.