Advantech VisionNavi User Manual page 58

Measure outer or inner diameter
Extract pairs of edges and measure the outer diameter and inner diameter using that
information.
Judgement method
By difference from master
Detect the difference with the registered master image and make a judgment on the
detection result.
By measured value
The judgment is made on the value of the feature value obtained as the detection
result.
VisionNavi User Manual 52