Author Topic: Automatic point cloud classification  (Read 4099 times)


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Automatic point cloud classification
« on: August 15, 2015, 03:00:31 AM »
My study area consists of a ground surface with a lot of sage brush. I successfully used automatic point cloud classification (after messing with the parameters a lot) to separate out the two. I am left with the ground as classified (brown points) and the vegetation as not classified (silver points). My goal now is to to automatically classify the sage brush as low-lying vegetation rather than keeping it as unclassified. However, I cannot figure out how to select all of these points to do so without resetting the entire first classification.

The tutorial skips this step  of a second auto-classification and assumes you would just want to create a mesh from the ground points. I want to keep all the points and end up with a nicely classified point cloud with both ground and low lying vegetation and export that.

Any help is much appreciated.

Alexey Pasumansky

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Re: Automatic point cloud classification
« Reply #1 on: August 20, 2015, 12:53:01 PM »
Hello RCGeo,

In case in the area of interest are only unclassified points that you wish to turn to a certain class and ground points, you can select the area (both classes) then go to Tools Menu -> Dense Cloud -> Assign class dialog. And then choose Unclassified in the "From" field and Low Vegetation in the "To" field.

Is it the one you need?
Best regards,
Alexey Pasumansky,
Agisoft LLC


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Re: Automatic point cloud classification
« Reply #2 on: September 16, 2015, 12:17:20 PM »
Hello Alekszej

What are the conditions "low points (noise)" classifying?