Gocator Line Profile Sensors: User Manual
Gocator Web Interface • 177
scans so that they are all oriented in the same way. This allows measurement tools to be applied
consistently to parts, regardless of the orientation of the part you are trying to match.
When the match quality between a model and a part reaches a minimum value(a percentage), or the
bounding box or ellipse that encapsulates the part is between minimum and maximum dimension
values, the part is "accepted"and any measurements that are added in the Measure page will return
valid values, as long as the target is in range, etc. If the part is "rejected," any measurements added in the
Measure page will return an Invalid value. For more information on measurements and decision values,
Measurement and Processing on page 196.
Using Edge Detection
When using edge detection for part matching, the Gocator compares a model that you must create from
a previous scan to a "target"(one of the parts you want to match to the model).
In the data viewer, a model is represented as a yellow outline. The targetis represented as a blue outline.
If the part match quality above a minimum user-defined level, any measurements configured on the
Measure page are applied.
Model (yellow outline) and target (blue outline).
Part match quality is 87.789%, which is greater
than the minimum set by the user, so the parts match.
When you create a model, theGocator runs an edge detection algorithm on either the heightmap or
intensity image of a scanned part. The resulting model ismade up of the detected edge points. The scan
used to create the model should be of a reference (or "golden")part to which all other parts will be
compared.
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