ipf electronic opti-check Technical Documentation Manual page 43

NOTE
Only use contour recognition sensitivity when all of the other image settings have been
performed successfully.
(device dependant)
To ensure consistent evaluation, all contours must be calculated consistently. This means that the image is
sharply focused and no over biases occur.
For critical objects, it may be appropriate to adjust the sensitivity of edge detection manually. Set the Edge
detection sensitivity to a value where the feature to be inspected is clearly recognizable.
Make sure that the contours of the test object are consistently obtained and that not too many "pseudo-
contours" are created.
You can make the contours visible using the following button from the image display options:
Example images of contours
too few contours
(contour recognition sensitivity must
be decreased)
NOTE
Error message: "Too much contour points! Please reduce the number of contour points."
You may avoid this error with the following corrective actions:



v2.8.2-K11
good contours
(optimum contour recognition
Adjust the application set-up:
- For example, change the position of the object being examined so that
interfering structures that create unnecessary contour points are outside
of the image area
- Cover up the interfering structures.
Adjust the edge detection sensitivity.
Reduce the image noise using lower amplification and correspondingly longer
exposure or stronger illumination.
sensitivity)
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Technical Documentation
too many contours
(contour recognition sensitivity must
be increased)
ipf electronic GmbH
Lüdenscheid, Germany
opti-check