Omron FH-3 Series Reference Manual page 386

3
Input the "Difference" in the "Difference
parameter" area.
Item
Difference
384
Fine Matching
Set value
[Factory default]
This sets the reference grayscale used when calculating differences
between the model and the inspected object image. Pixels with a
difference equal to or greater than Difference are converted to white and
other pixels are converted to black, so that only defects are converted to
white and measured.
Model Image
0 to 255
[50]
Description
Inspected object image
Difference
Pixels with difference equals to or greater
than Difference are white
Other pixels (with smaller difference with
the model) are black
Adjust the parameter with an NG image
displayed, so that you can refer to the
difference image.
FH/FZ5 Processing Item Function Reference Manual