Evaluating the precision of contactless measurement using computer tomography

Abstract

This paper presents the possibilities and usage of metrotomographic measurements using Metrotom device. The main motivation is to evaluate the precision of the scanning for complex objects. We also present a comparison of measuring strategies, which round up in the conducted experiment. In this experiment, we have paired a cloud of points of the measured element with its CAD model. With each one of three presented alignment strategies we repeated the pairing process, carried out 16 independent measurements of deviations and finally analyzed and evaluated the obtained results.