Question

Filtering out point cloud points which have too big Z difference compared to neighbor points

  • 25 October 2016
  • 2 replies
  • 3 views

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Hi group! I tried to find a way to filter out point cloud points, if they have too big Z difference compared to neighbor points. I couldn't find any transformer, which would do it. I could try using buffering a point, then find the points inside the buffer, then compare the Z with the buffered point and the inside points, but with 70GB of LAS files, I think it's too heavy. Are there any PointCloud related transformers, which could do that? Basically I'm filtering out noise and clouds or errors in Z.


2 replies

Userlevel 5
Badge +25

What you're suggesting is basically what I did a long time ago (before the Point Cloud transformers were available)

Have you tried resampling?

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@geolassi do you have any progress with your problem? I've got the same issue in my workspace.

 

 

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