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Proceedings Paper

Optimal color coding for compression of true color images
Author(s): Yurij S. Musatenko; Vitalij N. Kurashov
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Paper Abstract

In the paper we present the method that improves lossy compression of the true color or other multispectral images. The essence of the method is to project initial color planes into Karhunen-Loeve (KL) basis that gives completely decorrelated representation for the image and to compress basis functions instead of the planes. To do that the new fast algorithm of true KL basis construction with low memory consumption is suggested and our recently proposed scheme for finding optimal losses of Kl functions while compression is used. Compare to standard JPEG compression of the CMYK images the method provides the PSNR gain from 0.2 to 2 dB for the convenient compression ratios. Experimental results are obtained for high resolution CMYK images. It is demonstrated that presented scheme could work on common hardware.

Paper Details

Date Published: 6 November 1998
PDF: 12 pages
Proc. SPIE 3456, Mathematics of Data/Image Coding, Compression, and Encryption, (6 November 1998); doi: 10.1117/12.330360
Show Author Affiliations
Yurij S. Musatenko, Kyiv Univ. (Ukraine)
Vitalij N. Kurashov, Kyiv Univ. (Ukraine)

Published in SPIE Proceedings Vol. 3456:
Mathematics of Data/Image Coding, Compression, and Encryption
Mark S. Schmalz, Editor(s)

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