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Optical Engineering

Combining the discrete wavelet transforms and rank-order based filters for image restoration
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Paper Abstract

We propose a filter structure formed as the superposition of an impulse removal filter, based on a modified K-nearest-neighbor operation and discrete wavelet transform based noise reduction. This filter removes impulsive and Gaussian noise and mixed noises well. We also suggest an efficient architecture for implementing the impulse removal filter used in this structure.

Paper Details

Date Published: 1 January 1998
PDF: 13 pages
Opt. Eng. 37(1) doi: 10.1117/1.601606
Published in: Optical Engineering Volume 37, Issue 1
Show Author Affiliations
Samvel M. Atourian, Tampere Univ. of Technology (Finland)
Karen O. Egiazarian, Tampere Univ. of Technology (Finland)
David Zaven Gevorkian, Tampere Univ. of Technology (Finland)
Jaakko T. Astola, Tampere Univ. of Technology (Finland)


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