User's Manual

No ASR – NP – 20847 – 01
11
6-1-6. Gradation accuracy
6-1-6-1. The value of every block of gradation card
6-1-6-2. Computation method
Measurement area: 3 column of the center, Gamma is 1.
Procedure: 1) Calibrate image sensor with white reference card.
2) Capture image of gradation card
3) Calculate average of every block
Gradation card
A B C D E
Average 6 18 57 111 210
Maximum 24 37 75 128 231
Minimum 0 0 38 93 189