ABB PickMaster Twin - PowerPac Applications Manual page 276

4 Working with PickMaster PowerPac
4.3.9.4 Configuring inspection models
Continued
To classify the inspection area as accepted or rejected the histogram tool evaluates
two different magnitudes within the specified region:
Mean defines the min and max value for the inspection model. If the inspection
area has a mean value less than min or higher than max the inspection area will
be classified as rejected.
Std dev is a statistical measure that illustrates how closely all the various pixel
values are clustered around the mean value. An even color tone gives a narrow
histogram with low standard deviation while a speckled pattern gives a wide
histogram and a high value for Std dev.
Histogram subinspection parameters in item targets
The Mean and standard deviation parameters can be selected for the target
storage.
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6 If select Use Color, the window for the colors will show up.
xx1900000948
xx1900000949
7 Click OK.
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Application manual - PickMaster® Twin - PowerPac
3HAC064218-001 Revision: B