Eizo FLEXSCAN MX190 Manual do Utilizador Página 73

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RadiCS
Chapter 9 Pattern
73
English
TG18-AD
Supporting standard: AAPM/ACR
Description
There are grids of 7x7 in the center on the background of 0 grayscale. Each
grid has a vertical line of a certain grayscale at every dot. The cell in row 1 and
column 1 is 1 grayscale. 2 grayscale in column 2, 3 grayscale in column 3...7
grayscale in column 7. The cell in row 1 and column 1 is 8 grayscales. The cell
in row 6 and column 7 is 49 grayscales.
This pattern is to judge visible grayscales.
Checkpoint
Reflection No specular reflected image of excessive light
resource is seen.
There must be no difference in the low contrast
threshold because of monitor light.
TG18-AFC
Supporting standard: AAPM/ACR
Description
The background of 128 grayscales has 4 screen limits and each of them has
square frames in the center and the corner. The square frames are 4x4=16. The
size and grayscale of each 16 square varies. The sizes are 2, 3, 4, 6 from the left
to the right (The values may vary depending on the resolution.). The grayscales
are +2, +3, +4, +6 from the top to the bottom. The crosshatch of each screen
limit has a square. (Left top: size 2/grayscale+2, right top: size 3/grayscale+3,
left down: size 4/grayscale+4, right bottom: size 6/grayscale6)
This pattern is mainly to check the effects of identification with noise elements.
Checkpoint
Screen Stability There must be no noise.
TG18-GV
Supporting standard: AAPM
Description
White circle: 255 grayscale. This white circle has a black circle of 0
grayscale. And that circle in the white circle has 5 small circles of 2,
4, 6, 8, 10 grayscales. The white circle is hidden and the small circle is
shown to have no effect on human sight.
This pattern is mainly to see bailing glare effects.
Checkpoint
Bailing glare A circle in the middle of a small circle is visible (0
- 5).
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