Three-Dimensional Control of Color Management Systems - Control of Color Imaging Systems: Analysis and Design - page 375

Corners = 0 0 0 255 Cor n ers = 0 2 5 5 255 25 5

250 250

K -unfilt
M -unfilt
K -ref
K -filt
C -filt

K -unfilt
M -unfilt
K -ref
K -filt
C -filt

C -unfilt

C -unfilt

200 200

Y -unfilt Y -unfilt

150 150

M -filt
Y -filt

M -filt
Y -filt

100 100

50 50

0 0

0 20 40 60 80 100 0 20 40 60 80 100

(a) (b) From 0 to gamut corner From 0 to gamut corner

Cor n ers = 25 5 0 255 25 5 C orn e rs = 2 55 2 55 0 255

250

250

K -unfilt
M -unfilt
K -ref
K -filt
C -filt

K -unfilt
M -unfilt
K -ref
K -filt
C -filt

C -unfilt

C -unfilt

200 200

Y -unfilt

Y -unfilt

150

150

M -filt
Y -filt

M -filt
Y -filt

100 100

50 50

0 0

0 20 40 60 80 100 0 10 20 30 40 50 60 70 80 90 100

(c) (d) From 0 to gamut corner From 0 to gamut corner

FIGURE 7.46 Response curves for K-restricted GCR (after preconditioning iterations) to different gamut corners from white (C ¼ M ¼ Y ¼ K ¼ 0)).