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1 April 1998 Wavelet packets and multiresolution criterion for color image compression
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Proceedings Volume 3308, Very High Resolution and Quality Imaging III; (1998)
Event: Photonics West '98 Electronic Imaging, 1998, San Jose, CA, United States
We present in this paper a wavelet packet transform algorithm for color still image and we show how and with what performances the transformed image tree can be pruned and the imagets altered in order to obtain a compression/decompression algorithm respectful of human psychovisual image perception. In the first part we present the basic assumptions for human vision on which we have constructed our algorithm; the second part deals with the color transformation we used before applying wavelet packet transform and in the third part we show that a quasi lossless compression/decompression scheme can be easily obtained with compression ratio up to 1:10 (quantization step was not considered here). Finally, we propose a new quality criterion based upon the results of our tests on human sensitivity to various scale and color image details. This figure of merit can be considered as a multiresolution release of the most commonly used PSNR criterion.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Frederic Truchetet, Francis Perot, and Olivier Laligant "Wavelet packets and multiresolution criterion for color image compression", Proc. SPIE 3308, Very High Resolution and Quality Imaging III, (1 April 1998);

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