Processing of triangulation scanner data for measurements of rail profiles

In this article, we describe algorithms for superposition of a profile of the rail under measurement and that of an unused rail. The algorithms calculate parameters of the superposition, which links the two profiles, with one of them being described by a set of points and the other - by line equations. The algorithms are intended for evaluating the rail wear based on the data from triangulation scanners, which are installed on a track measuring car.