Magic number 131 in featureExtraction()

[bvolkmer]

Hey,
I am currently trying to test this on AirSim simulated data. Currently, all points are filtered in feature extraction because of
src/laserProcessingClass.cpp:69
Here all scans are skipped, if there are less than 131 points, without explanation.
I would understand 11, as we need at least that much for a single curvature calculation.

How is this number caluclated. (It should be somewhat dependent on the sensor parameters).