PointCloud density

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T1230321
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Joined: Mon Oct 10, 2022 9:12 am

PointCloud density

Post by T1230321 »

Hi,

Is it possible to caclulate the point cloud density (perhaps points per mm2)?

Thanks
daniel
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Re: PointCloud density

Post by daniel »

Daniel, CloudCompare admin
T1230321
Posts: 12
Joined: Mon Oct 10, 2022 9:12 am

Re: PointCloud density

Post by T1230321 »

Thanks, Daniel. I had come across this but wasn't sure if there is a way to obtain a value of the average (whole) point cloud density in mm2?
daniel
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Joined: Wed Oct 13, 2010 7:34 am
Location: Grenoble, France
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Re: PointCloud density

Post by daniel »

So first the density values units will depend on the original cloud coordinates units (CC loads the values 'as is' from the files, which units are used are almost never indicated in the files, so CC will just compute everything in the same units, implicitly).

Then, once you have computed 'surface density' (if you want square units), then you can fit a Normal distribution on the resulting scalar field (cloud) with Edit > Scalar field > Compute stat. params'. And then read the average density from there.
Daniel, CloudCompare admin
T1230321
Posts: 12
Joined: Mon Oct 10, 2022 9:12 am

Re: PointCloud density

Post by T1230321 »

Thanks for your reply, that's really helpful
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