Filter Isolated Points
Use Isolated points filter
to filter points that are a large distance from any other points. This
can be useful for filtering dust particles or insects that have been
scanned.
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On the Position and Filter ribbon tab navigate to the Filter group. From the Filters drop-down list select Isolated Points.
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Specify a Point separation. Points without a neighbouring point within this distance will be filtered.
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Select the required Filter combination.
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Click OK or Apply
Before
After
Note: The points can be recovered using the Show All option.