Difference between revisions of "Scanning on a NEWPORT type table"

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(→‎The Impact on Cylinder Calculations)
(→‎Potential For Outliers At Normal Relfective Surfaces)
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Notice that the chamfer that is normal to the laser and the camera is showing a bubble outlier.  (Click on the image to see a closer view of this screen shot.)  The effect is that the camera sees points where the is no object in space.<br><br>
 
Notice that the chamfer that is normal to the laser and the camera is showing a bubble outlier.  (Click on the image to see a closer view of this screen shot.)  The effect is that the camera sees points where the is no object in space.<br><br>
 
One way to overcome this bubble is to increase the cut plane offset.  In this case, the offset was set to 1 inch.<br><br>
 
One way to overcome this bubble is to increase the cut plane offset.  In this case, the offset was set to 1 inch.<br><br>
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Another way to overcome this issue is to place a darker surface (a mat or paint) in the table.</td>
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Another way to overcome this issue is to place a darker surface (a mat or paint) in the table.
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[[image:vtube-laser_closeup_outliers.png|200px]]</td>
 
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[[image:Faro_LLP_Control_Newport_Table.png|600px]]
 
[[image:Faro_LLP_Control_Newport_Table.png|600px]]
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== The Impact on Cylinder Calculations==
 
== The Impact on Cylinder Calculations==

Revision as of 19:13, 13 April 2016

Vtube-laser logo 1.96.png

Vtl screen hd scanner without logo.png



NEWPORT Tables

Scanning on NEWPORT tables is possible with the FARO scanner system, but care must be taken because of the high reflectivity of the surfaces in the drilled and tapped holes.

Newport table.png


Scanning Example

The image on right shows an example of scanning a tube on a Newport table.

Scanning on newport.png


Potential For Outliers At Normal Relfective Surfaces

View the angle of the scanner in the image in the preceding section.

Now see this closeup. The chamfer in the hole being called out is perpendicular to the incoming laser beam.

This can cause slight outliers to the laser camera that can cause the cylinder calculation to fail if the cut plane offset is not set large enough.

Closeup newport outliers note.png

This is the image of the real-time scanned points in the FARO Laser Line Probe scanner setup screen.

Notice that the chamfer that is normal to the laser and the camera is showing a bubble outlier. (Click on the image to see a closer view of this screen shot.) The effect is that the camera sees points where the is no object in space.

One way to overcome this bubble is to increase the cut plane offset. In this case, the offset was set to 1 inch.

Another way to overcome this issue is to place a darker surface (a mat or paint) in the table.

Vtube-laser closeup outliers.png

Faro LLP Control Newport Table.png


The Impact on Cylinder Calculations

If VTube uses these outliers to calculate the diameter, then often the cylinder fit math will fail to find a centerline - and VTube will ask you to remeasure the straight where the problem is occuring.

Vtube-laser cylinderfit error window.png


Other Pages

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