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Proceedings Paper

Median regularization of iterative image restoration methods
Author(s): Zenon Grytskiv; Sviatoslav V. Voloshynovskiy; Yuri B. Rytsar
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Paper Abstract

This paper introduces an approach to the regularization of the iterative restoration methods based on the median filtering. The comparative analysis of low-pass and median regularization is performed. The median filtering is shown to be more efficient as the regularization in the case of noise with mixed distribution. The nonlinearity of the iterative method is provided by the constrain on non-negativity that makes possible to solve the problem of band-limited extrapolation. The use of median regularization does not require to chose the regularization parameter in contrast to Tikhonov regularization. However, the window size is to be chosen according to the noise level and could be considered as a parameter for the adaptive regularization to preserve edges according to the masking effect of human vision system.

Paper Details

Date Published: 20 October 1997
PDF: 9 pages
Proc. SPIE 3238, Current Ukrainian Research in Optics and Photonics: Optoelectronic and Hybrid Optical/Digital Systems for Image Processing, (20 October 1997); doi: 10.1117/12.284815
Show Author Affiliations
Zenon Grytskiv, State Univ. Lvivska Polytechnika (Switzerland)
Sviatoslav V. Voloshynovskiy, State Univ. Lvivska Polytechnika (Switzerland)
Yuri B. Rytsar, Institute of Physics and Mechanics (Switzerland)


Published in SPIE Proceedings Vol. 3238:
Current Ukrainian Research in Optics and Photonics: Optoelectronic and Hybrid Optical/Digital Systems for Image Processing
Simon B. Gurevich; Roman S. Batchevsky; Leonid I. Muravsky, Editor(s)

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