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TE223 A Gray Scale Test Chart Reflectance

TE223 A Gray Scale Test Chart Reflectance is designed for evaluation of the halftone reproduction of electronic cameras.
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Date:2018-10-25  Browse:
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TE223 A Gray Scale Test Chart Reflectance

 

TE223 A Gray Scale Test Chart Reflectance

TE223 A Gray Scale Test Chart Reflectance

Model TE223 A
Type Reflective/Transparent
Size 280 x 157.5mm
Ratio 16:9

TE223 A Gray Scale Test Chart Reflectance is designed for evaluation of the halftone reproduction of electronic cameras. 

Two 13-graduated counter current gray scales are arranged on a gray background (D = 0.75), the gray scales being graduated logarithmically. Related to the densities of the gray scales: gamma = 0.45, related to the transmission values (brightness): gamma = 2.2, that being exactly the reciprocal value of gamma = 0.45. The output signal of a optimally gamma-corrected camera yields two 13-gratuated counter current linear step signals.

The contrast range of the gray scales is 200 : 1.

The values of the 11-graduated gray scale chart are as follows:

Step

Density

Reflectance in %

1

0.05

89

2

0.13

74

3

0.21

62

4

0.30

50

5

0.40

40

6

0.51

31

7

0.63

23

8

0.78

17

9

0.95

11

10

1.15

7

11

1.41

4

12

1.77

2

13

2.35

0.5


The density of the white field between the gray scale chart is D = 0.05 (reflectance = 89 %).


Keywords: Gray Scale Test Chart, grayscale chart, grayscale test chart
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