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Initialization of iterative parametric algorithms for blind deconvolution of motion-blurred images

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Abstract

Performances of iterative blind deconvolution methods for motion-blurred images are usually reduced depending on the accuracy of the required initial guess of the blur. We examine this dependency, and a two-stage restoration procedure is proposed: First we perform a direct technique with a single straightforward process to produce a rough initial estimate of the blur, and then an iterative technique is employed to refine the blur estimate. Two common iterative techniques (the expectation-maximization and the Richardson–Lucy methods) are examined here and implemented in the combined direct–iterative modification for a variety of motion blur types. Results show that the combined method significantly improves the reliability of the deconvolution process.

© 2006 Optical Society of America

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