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Proceedings Paper

Zonal compression of greyscale images using Walsh and PWL transforms
Author(s): Dorota Wiraszka; Robert Spadło
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Paper Abstract

Results of zonal compression applied for greyscale images with the use of Walsh and PWL transforms have been presented in the paper. Both transforms, belonging to the class of piecewise-linear transforms and the zonal compression method have been described. Zonal compression, based on the selection of a specified zone in the spectral domain, has been performed for various zone shapes. Results of experiments with the use of the described method have been enclosed. Compression effectiveness has been evaluated in the terms of the Mean-Square Error (MSE) and the Peak Signal-to-Noise Ratio (PSNR). Visual evaluation of the reconstructed images has been also taken into account.

Paper Details

Date Published: 28 December 2007
PDF: 9 pages
Proc. SPIE 6937, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2007, 69372U (28 December 2007); doi: 10.1117/12.784753
Show Author Affiliations
Dorota Wiraszka, Kielce Univ. of Technology (Poland)
Robert Spadło, Kielce Univ. of Technology (Poland)


Published in SPIE Proceedings Vol. 6937:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2007

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