Gain control for the chromatic channels in JPEG2000
نویسندگان
چکیده
The variety of perception models included in JPEG2000 are the key for its rate-distortion performance. However, the most powerful perceptual model (masking using non-linear divisive normalization) had to be simplified to make it invertible. Recently, a robust and fast algorithm to invert the exact expression of divisive normalization has been derived and successfully used in the achromatic DCT context. In this work we extend the above inversion method to color images in wavelet representations to avoid the limitations of the simplified models included in JPEG2000.
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