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Gamut de cores visíveis
T1 - 2014
MGattass DI-PUC/Rio
Cor de um objeto no CIE XYZ
780
380
780
380
780
380
)()()(
)()()(
)()()(
dzLkZ
dyLkY
dxLkX
w
w
w
l(nm)
0.5
1.0
1.5
2.0
400 500 600 700
)(x)(y
)(z
)(wL
)(
)()( wL
780
380
)()(
00.1
dyL
k
w
reflexão do material
iluminante
Gamut de cores
MGattass DI-PUC/Rio
Luz branca difusaSuperfícierefletorateórica
Gamut de cores
MGattass DI-PUC/Rio
780
380
780
380
780
380
780
380
)()()()()(
)()()(
)()()(
)()()(
dzyxLkZYX
dzLkZ
dyLkY
dxLkX
w
w
w
w
780
380
780
380
1780
380
780
380
780
380
)()()()(
)()(
)()()()(
)()(
dzyxLkZYX
dzLkZ
dyLkdyLkY
dxLkX
wwww
ww
www
ww
zL
yL
xL
yL
www
www
www
www
kzLkZ
kyLkY
kxLkX
yLk
780
380
780
380
780
380
11780
380
)()()(
)()()(
)()()(
)()(
T
T
T
Tww
T
Twwww
zzz
yyy
xxx
LL
LLL
)780(,),381(),380(
)780(,),381(),380(
)780(,),381(),380(
)780()780(,),380()380(
)780(,),381(),380(
)780(,),381(),380(
z
y
x
L
L
X
Y
Z
K
W
X
Y
Z
K
W
10,
Y
Z
Y
X
Y
Z
Y
X
w
w
w
Estar no plano:
222wwwwww ZYXZZYYXX
Estar na borda:Espectro mais saturado
0
0
0
Z
Y
X
09.1
1
95.0
w
w
w
Z
Y
X
Z
Y
X
ZZYYXX www
Twwwwww zZyYxXzZyYxX )780()780()780(,),380()380()380( s
zLyLxL wwwwww kZkYkX
zyxL wwww ZYXk
sL wwww kZZYYXX
0.1,9.0,...,2.0,1.0,0.0,222 YZYXk
Ywww
w
sL
X
Y
Z
K
W
Estar na borda:Espectro mais saturado
Vamos buscar superfíces que reflitam de forma mais saturada possível radiância cujas cores CIEXYZ caiam em cada um dos planos α=constante
0.1,9.0,...,2.0,1.0,0.0,222 YZYXk
Ywww
w
sL
l(nm)
380 430 480 530 580 630 680 730 780
)(
l0 l1
l(nm)
380 430 480 530 580 630 680 730 780
)(
l0l1
1.0
1.0
lM
lM
Refinamento progressivo
MGattass DI-PUC/Rio
0Y
1Y580
5.0
M
Y
380
5.0
M
Y
