ABB FlexLoader Vision Product Manual page 36

4 Teachin
4.6 Parameters
Continued
Pos.
A
B
C
D
E
Don't Care Regions
When a position has been defined you can mask out certain parts of the position
by marking them as areas that the system should ignore during the analysis. For
example, a position may contain some parts that can appear very different to the
camera depending on their orientation. This is very common when the light
reflections from the detail vary from detail to detail. By masking these parts out
you can ensure that they do not affect the search results.
In the image below (with no masking) there are extra edges in the found target to
the right (E). These extra edges have a negative effect on the Score target, and in
this case the result is 85%.
xx1800001033
Pos.
A
B
C
D
E
Figure 4.3: No masking
In the image below, parts of the teachin position have been masked out. During
the search, any edges that are found in this area are excluded from the calculations.
In this example it means that the Score target value for the two teachin positions
is unaffected by the extra edges in the position to the right (E).
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36
Description
Teachin position
Found positions
Position 1
Position 1, Score 100%, Score target 100%
Position 1, Score 100%, Score target 85%
Description
Teachin position
Found positions
Position 1
Position 1, Score 100%, Score target 100%
Position 1, Score 100%, Score target 85%
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Product manual - FlexLoader Vision
3HAC051771-001 Revision: B