TY  - CONF
AU  - Jaime Moreno
AU  - Xavier Otazu
AU  - Maria Vanrell
A2  - CGIV/MCS
PY  - 2010//
TI  - Local Perceptual Weighting in JPEG2000 for Color Images
BT  - 5th European Conference on Colour in Graphics, Imaging and Vision and  12th International Symposium on Multispectral Colour Science
SP  - 255–260
N2  - The aim of this work is to explain how to apply perceptual concepts to define a perceptual pre-quantizer and to improve JPEG2000 compressor. The approach consists in quantizing wavelet transform coefficients using some of the human visual system behavior properties. Noise is fatal to image compression performance, because it can be both annoying for the observer and consumes excessive bandwidth when the imagery is transmitted. Perceptual pre-quantization reduces unperceivable details and thus improve both visual impression and transmission properties. The comparison between JPEG2000 without and with perceptual pre-quantization shows that the latter is not favorable in PSNR, but the recovered image is more compressed at the same or even better visual quality measured with a weighted PSNR. Perceptual criteria were taken from the CIWaM (Chromatic Induction Wavelet Model).
SN  - 9781617388897
N1  - CIC
ID  - Jaime Moreno2010
ER  -