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Standard deviation is the square root of the variance of a random variable, an estimator thereof, or a similar measure of the spread of a batch of data.

7 votes

The algorithm behind pcl::StatisticalOutlierRemoval

Surprisingly the algorithm isn't very complicated and the explanation on the pcl website is actually almost all there is to it. There's however some subtleties that don't appear in the above link, so …
calocedrus's user avatar