2-9-(26)
Circle Position Compensation
Section 2-9
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
Comparison is started from the reference image characteristic features with
the lowest number.
The points are moved by two and then compared again.
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*))
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
Input image
1 2 3 4 5 6
600
600
1 2 3 4 5 6
Compared
Reference Image Characteristic Points
Input Image Characteristic Points
6
8
Compared
Mode
Details
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
White defect
Edge
Registered points in order from the point with the highest den-
sity difference from the surrounding pixels until the set number
of points is reached.