Image aberrations in optical three-dimensional measurement systems with fringe projection.
In optical shape measurement systems, systematic errors appear as a result of imaging aberrations of the lens assemblies in the cameras and projectors. A mathematical description of this effect is intended to correct the whole measurement area with a few independent coefficients. We apply the ideas of photogrammetry to one- and two-dimensional fringe projection techniques. We also introduce some new terms for close-range applications and telecentric objectives. Further, an algorithm for distance-dependent corrections is introduced. Also, we describe a new method with which to determine coefficients of aberration with an optimization-based method.
Brakhage
Peter
P
Fraunhofer-Institute for Applied Optics and Precision Engineering, 07745 Jena, Germany. p.brakhage@ivb-jena.de
Notni
Gunther
G
Kowarschik
Richard
R