RECOMMENDATIONS FOR AN ACCEPTANCE AND VERIFICATION TEST OF OPTICAL 3-D MEASUREMENT SYSTEMS

The paper reports on the development of a new guideline for acceptance and verification of optical 3-D measuring system, e.g. photogrammetric systems or fringe-projection systems. The work has started in 1996, initiated by the working group “Close-range Photogrammetry” of the German Society for Photogrammetry and Remote Sensing (DGPF) and by the working group “Co-ordinate measuring machines” of the German Society for measurement and automatic control (VDI/VDE-GMA). A new VDI working group has been established joining almost all important users and manufacturers of optical 3-D systems. The new guideline VDI 2634 proposes procedures for the acceptance of point-wise photogrammetric systems (part 1), and area-based surface measurement systems (part 2). For both groups of systems the “error of length measurement” has been selected as the most significant criterion for an over all performance assessment. Surface measurement systems shall also be checked according to “error of flatness measurement” and “probing error”. Suitable calibrated reference objects are proposed as well.