Wavelet transform for still color image compression

Frederic Truchetet; Benjamin Joanne; Olivier Laligant

doi:10.1117/12.270042

4 April 1997 Wavelet transform for still color image compression

Frederic Truchetet, Benjamin Joanne, Olivier Laligant

Proceedings Volume 3025, Very High Resolution and Quality Imaging II; (1997) https://doi.org/10.1117/12.270042
Event: Electronic Imaging '97, 1997, San Jose, CA, United States

Abstract

We consider here the compression of still color image with very low distortion from the human eye point of view. The basic idea in this work is to take into account the variations of human eye/brain spatial resolution with color. The most natural way for an image processing researcher to perform such a scheme is to use a multiresolution analysis of the image to be coded before quantization and coding. Previous experiences connected with still grey value image compression/decompression scheme design have shown that the wavelet transform, Mallats algorithm is a very efficient method for this purpose, particularly if real time implementation is under consideration. Hence we present in this paper a wavelet transform algorithm for color image and we show how and with what performances the transformed image can be altered and reduced. We show that a quasi lossless compression/decompression scheme can be easily obtained with compression ratio up to 1:10. The results obtained after a large series of testes based on psychovisual estimations rather than on pure PSNR evaluation are in good accordance with the assumed properties of the human visual perceptive system.

Citation Download Citation

Frederic Truchetet, Benjamin Joanne, and Olivier Laligant "Wavelet transform for still color image compression", Proc. SPIE 3025, Very High Resolution and Quality Imaging II, (4 April 1997); https://doi.org/10.1117/12.270042

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