Omron F250-UME Software Manual page 229

Circle Position Compensation
Reference Image Characteristic Points
1 2 3 4 5 6
6
Comparing Pitch
Select the number of registered detection points on the input image that are to
be compared to the reference image.
The larger the setting, the larger the detection interval. This will increase pro-
cessing speed, but decrease detection accuracy. (1 to 9 (1*))
Example:Mode: Black defect
Skipping angle: 60 (0.6 )
Comparing pitch: 2
The characteristic points (here, black points) on the reference image are
compared to those on the input image shifting two points at a time.
Reference image
Comparison is started from the reference image characteristic features with
the lowest number.
600
Compared
The points are moved by two and then compared again.
Compared
Necessary Elements
Set how many points (pixels) out of the characteristic feature detected using
the mode set under Measurement conditions will be registered for compari-
son.
The smaller the setting, the fewer points will be compared. This will increase
processing speed, but decrease detection accuracy. (1 to 99 (20*))
Mode
Black Registered points in order from the lowest density until the set
number of points is reached.
White Registered points in order from the highest density until the set
number of points is reached.
Black defect Registered points in order from the point with the highest den-
sity difference from the surrounding pixels until the set number
White defect
of points is reached.
Edge
Input Image Characteristic Points
1 2 3 4 5 6
8
Details
Section 2-9
Input image
600
2-9-(26)