ITE Grayscale Chart II(Gamma = 1)
The
ITE Grayscale Chart II(Gamma = 1) is
disigned and used to
evaluate
the halftone reproduction of an electronic camera. Two 11-graduated
counter current gray scales are arranged on a gray background
(D≈0.65), the gray scales being graduated linear. Related to
the densities of the gray scales: gamma = 1. The contrast range of the
gray scales is 40:1.
Properties
Type |
selectable |
Format |
selectable |
Aspect
ratio |
4:3 |
The
values of the 11-graduated gray scales are the follows:
Step |
Density |
Reflectance
in % |
1 |
0.05 |
89 |
2 |
0.10 |
80 |
3 |
0.14 |
72 |
4 |
0.20 |
63 |
5 |
0.26 |
54 |
6 |
0.34 |
45 |
7 |
0.43 |
37 |
8 |
0.55 |
28 |
9 |
0.71 |
19 |
10 |
0.96 |
11 |
11 |
1.65 |
2 |
The
density of the white filed between the gray scales is D = 0.05
(reflectance = 89%).
ITE Gray scale Chart I(Gamma = 1)
The
ITE Gray scale Chart I(Gamma = 1) is
disigned and used to
evaluate
the halftone reproduction of an electronic camera. Two
11-graduated counter current gray scales are arranged on a gray
background(D=0.62) . The gray scales being graduated logarithmically
(gamma = 0.45).The output signal of an optimal gamma-corrected camera
yields two 11-graduated counter current linear step signals. The
contrast range of the gray scale is 40:1.
The values of the 11-graduated gray scale are as follows:
Step |
Density |
Reflectance in % |
1 |
0.05 |
89 |
2 |
0.13 |
74 |
3 |
0.22 |
60 |
4 |
0.32 |
48 |
5 |
0.43 |
37 |
6 |
0.55 |
28 |
7 |
0.69 |
20 |
8 |
0.86 |
14 |
9 |
1.06 |
9 |
10 |
1.31 |
5 |
11 |
1.65 |
2 |
The density of the white field between the gray scale is D=0.05 (reflectance = 89%).
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