An assessment on the accuracy of high precision 3D positioning using planar fiducial markers

Abstract

High-accuracy remote position measurements are regarded in applications where different systems or components need to be placed in precise configurations. There are some cases in which it is impossible to define an absolute, precise reference frame and the application should rely only on relative measurements. In recent years, fiducial markers began to provide an interesting alternative to standard industrial positioning systems, which are very expensive and very difficult to integrate in various applications. This paper provides a study concerning the accuracy for measuring the position of fiducial markers and experimental results obtained using an imaging setup. This paper also presents a solution for calibrating a fiducial marker cube which extends the working space up to 360 degrees.