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Image Restoration Algorithm using Backward Diffusion Equation  

이석호 (연세대학교 전기전자공학과)
최은철 (연세대학교 전기전자공학과)
강문기 (연세대학교 전기전자공학과)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.40, no.1, 2003 , pp. 34-42 More about this Journal
Abstract
In this paper, the image restoration process is interpreted as a backward diffusion process and the restored image is given as the solution of the backward diffusion equation (BDF). The ill-posedness of the backward diffusion if subdued by manipulating the exponentially increasing coefficients of the eigenfunctions. In manipulating the coefficients the spectral characteristics of an image is taken into account. The proposed scheme uses an exponentially decreasing function of the coefficients of the eigenfunctions beyond a certain threshold which is optimal with respect to the observation accuracy. The use of decreasing functions also improves the result compared with the constant bounded algorithm since it can include more low frequency components.
Keywords
영상복원;편미분방정식;역확산 방정식;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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