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3.3 Optional image function
(3)
Dynamic Threshold Curve
For the Dynamic Threshold function, the threshold is changed with the average optical density of
a small area (e.g. 5x5 pixel area).
Relation between the threshold and maximum density is formed as a curve when the threshold is
expressed in the Y-axis and the maximum density in the X-axis. This curve is called "threshold
curve".
3-15
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