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This article presents a new algorithm for blind deconvolution and consequently enhancement for ultrasonic C-scan images. A modified two-dimensional (2-D) H/sub /spl infin// state estimation technique has been utilized that deconvolves the effect of unknown blur in the image and enhances the important edges. A new state-space model, based on redundant representation of constrained 2-D convolution sum, has been developed for the image so that it can be utilized in the H/sub /spl infin// state estimation framework. Satisfactory results have been obtained for real images. The same procedure can also be applied to any other image where localized enhancement can be helpful.
Date of Publication: May 2002