Search ROI
The Search Region of Interest (ROI) is the
user-defined
group of pixels in the image that the sensor analyzes.
Figure 209. Search ROI
The Search ROI is indicated by a red or green box that is always rectangular. By default the Search ROI is 20% to 30% larger than the
Teach ROI, which is blue. The sensor searches for the match only within the Search ROI.
Resize
the Search ROI as needed for the
inspection.
Teach ROI
The Teach Region of Interest (ROI) is the
user-defined
group of pixels in the image that the sensor uses to teach a reference
pattern.
Figure 210. Teach ROI
Resize
and rotate
the ROI around the feature to be used as the reference
pattern.
Change the shape of the ROI to a square,
ellipse, or circle as needed by expanding Teach ROI on the Parameters pane and
selecting
the desired shape. The Teach ROI
automatically
displays on the Image pane when a Match tool is added.
Pattern
Displays the reference
pattern
that the sensor is looking for. A teach is required for the Match tool. Click Teach to set the match tool
criteria and display the reference
pattern.
Figure 211. Teach Required
Figure 212.
Pattern
Taught
A red error displays
until
the teach is performed and the reference
pattern
is taught. When new
patterns
are added, you will need to
teach the reference
pattern
again.
VE Series Smart Camera
112
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