Roughness

Menu

This tool is accessible via the 'Tools > Other > Roughness' menu.

Since version 2.11, this tool is part of 'Tools > Other > Compute geometric features'.

Description

This tool estimates the 'roughness' of a cloud.

Procedure

Select one or several point clouds then start this tool.

CloudCompare will only ask for the 'kernel size': the radius of a sphere centered on each point (see the Notes below).

Roughness output

Notes:

• Roughness estimation is very... simple: for each point, the 'roughness' value is equal to the distance between this point and the best fitting plane computed on its nearest neighbors.
• If there's not enough neighbors to compute a LS plane (i.e. less than 3) an invalid scalar value (NaN) is set for this point. This point will appear in grey (or not at all if you uncheck the 'display NaN values in grey' option in the scalar field properties).