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Goodmorning everyone,

I wanted to know if anyone has any idea what the algorithm behind the noise filter is called. Is it ball pivoting by chance? Because I can't find any information on this.

Good evening and sorry for the inconvenience

No, it's actually an extended version of the SOR (Statistical Outlier Removal) tool of the PCL library:
https://pcl.readthedocs.io/en/latest/st ... tlier.html

The 'Noise' filter is directly inspired from SOR, but with more parameters:
https://www.cloudcompare.org/doc/wiki/i ... ise_filter