TY  - CONF
AU  - Jaime Moreno
AU  - Xavier Otazu
AU  - Maria Vanrell
A2  - CREATE
PY  - 2010//
TI  - Contribution of CIWaM in JPEG2000 Quantization for Color Images
BT  - Proceedings of The CREATE 2010 Conference
SP  - 132–136
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(ChromaticInductionWaveletModel).
N1  - CIC
ID  - Jaime Moreno2010
ER  -