IDEC DATAVS2 Series - Manual (Page 53)

Instruction Manual SVS2 Series
48
Example
Add "Contour Match" control to current inspection to detect the contour of a bright object on a dark
background.
Select "Contour Match" from the pull-down menu:
Position the control on the reference image in the work
area: the pointer changes shape as soon as it enters the
work area. Left-click once at any position to create a
default rectangular ROI.
At the same time, the control features and the result of its
application to the reference image appear in the control
panel.
Set ROI size and position as required, as explained
above.
The result indicated by STATUS is also highlighted by
the ROI border changing colour.
As soon as values change, result is calculated without
delay.
The object and its contour are highlighted in yellow inside
the ROI:
as can be seen from the example
image, the bright object is highlighted as specified at parameter Object type, which
was set to "Bright object".
More specifically, the portion of the bright object situated inside the ROI is
highlighted: since the ROI does not encompass the entire object, part of the ROI
borders are treated as object orders.
Let’s see another example of application. In this particular task we want to control the circular shape of
a coffee pod. The coffee pod is seen from the top side. The Contour Match searches for a closed
shape into the ROI area and compares it with the reference shape previously set. The Fig. A shows a
successfully check, the Fig. B shows a negative match.
Fig. A: SUCCESS Fig. B: FAILURE