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Fig.1 Motoyoshi 2006-10-10901A motoyosi@apollo3.brl.ntt.co.jp. a. # pixels. 0. 0. 0.5. 1. 0.5. 1. Luminance. Luminance. b. 3. 3. Glossiness rating. Skewness. Skewness. Glossiness rating. Lightness rating. Skewness. 0. 0. Skewness. Lightness rating. -2. -2.
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Fig.1 Motoyoshi 2006-10-10901A motoyosi@apollo3.brl.ntt.co.jp
a # pixels 0 0 0.5 1 0.5 1 Luminance Luminance b 3 3 Glossiness rating Skewness Skewness Glossinessrating Lightnessrating Skewness 0 0 Skewness Lightness rating -2 -2 % of Diffuse reflectance Specular intensity c Lightnessrating Glossinessrating Skewness Skewness paper fabric stucco d Lightness rating Glossiness rating Fig.2 Motoyoshi 2006-10-10901A motoyosi@apollo3.brl.ntt.co.jp Skewness Skewness
On Off non- linearity spatial pooling Linear filters comparison Fig.3 Motoyoshi 2006-10-10901A motoyosi@apollo3.brl.ntt.co.jp
a b c Luminance Luminance adapt (spots) adapt (stucco) pre-adapt d 100 100 % (glossier) % (darker) 50 50 0 0 Skewness offset Skewness offset Fig.4 Motoyoshi 2006-10-10901A motoyosi@apollo3.brl.ntt.co.jp