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6 Vision Sensor Program [Vision Master]
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6.7.6
Shape comparison
You can use the shape comparison function to inspect the shape of the object.
Shape comparison compares features and patterns of the terget object in the ROI of the input
image and that of the registered image.
It sets pass range based on the similarity of the ROI in the registered image and the ROI in the
input image.
Similarity of the two images over the threshold is regarded as Pass, while similarity of the two
images under the threshold is regarded as Fail.
No. Item Description
1 Similarity It is similarity of the registered template and the detected template.
2
Similarity
threshold
※ 1
It is similarity discrimination value for determining pass/fail.
3 Edge threshold
It sets threshold to detect edge.
Only edges with high contrast can be detected in high edge threshold,
while edges with low contrast also can be detected in low edge
threshold.
4
Automatic
teaching
Even if user set the pass range, it teaches pass range based on the
pixel of ROI.
5 ROI type
It sets type of ROI to inspect.
(rectangle/polygon/circle)
6 OK/Cancel It registers work to work group or cancel to register.