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Fig.1 Motoyoshi 2006-10-10901A [email protected]. 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. - PowerPoint PPT Presentation
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- 2
- 1
0
1
2
3
0 .1 1 1 0 1 0 0
0
1
2
3
4
0 . 1 1 1 0 1 0 0- 2
- 1
0
1
2
3
1 1 0 1 0 0
0
1
2
3
4
- 4 - 2 0 2 4
0
1
2
3
4
1 1 0 1 0 0
a
# p
ixe
ls
0 0.5 1 0.5 1Luminance
0
Skewness
Lig
htn
ess
ratin
g
Glo
ssin
ess
ratin
g
Skewness
Lig
htn
ess
ratin
g
b
% of Diffuse reflectance
Skew
ne
ss-2
3
0
Lightness rating
Skewness
c
stucco fabricpaper
Skewness
Lig
htn
ess
ra
ting
Glo
ssin
ess
ra
ting
0
1
2
3
4
- 4 - 2 0 2 40
1
2
3
4
- 4 - 2 0 2 4
Skewness
d
Luminance
Glo
ssin
ess
ratin
g
Specular intensity
Skew
ne
ss
-2
3
0
Glossiness
rating
Skewness
0
1
2
3
4
- 4 - 2 0 2 4
Fig.2
Motoyoshi
2006-10-10901A
On
Off
Linearfilters
non-linearity
spatialpooling
comparison
Fig.3
Motoyoshi
2006-10-10901A
p
a%
(da
rker
)
Skewness offset
pre-adapt adapt (stucco)adapt (spots)d
b
c
Luminance Luminance
% (
glos
sier
)
Skewness offset
- 1 . 5 - 1 - 0 . 5 0 0 . 5 1 1 . 5- 1 . 5 - 1 - 0 . 5 0 0 . 5 1 1 . 50
50
100
0
50
100
Fig.4
Motoyoshi
2006-10-10901A