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[WM]: JND of wavelet subbands in Chun-Hsien Chou 's Visual Model.
Dear watermarker,
I am newbie in watermarking. According to Chun-Hsien Chou model in " Color image watermarking based on a color visual
model,Chun-Hsien Chou; Kuo-Cheng Liu;Multimedia Signal Processing, 2002 IEEE Workshop on , 9-11 Dec. 2002 "
Chou has proposed the JND profile.At first he calculated the background luminance affect and the spatial masking effect. The both
effects was done in spatial domain. My problem are (1)how to decompose them in to DWT with sensitivity effect?
(2)what and how to use spatial frequency effect of HVS in his model?
(3) Compare to Christine I. Podilchunk 's JND, she calculate JND from DWT coef. of image, are they differrece?
Please give me some suggestion or related link.
Regards,
Kasemsuk Sepsirisuk
Phd student.
Tokai University, Japan.
email : skasem@hotmail.com
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