PRECISION AND ACCURACY PARAMETERS IN STRUCTURED LIGHT 3-D SCANNING
- 1Department of Applied Mathematics and Computer Science, Technical University of Denmark, Kgs. Lyngby, Denmark
- 2Department of Mechanical Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark
Keywords: Structured Light, 3d Scanning, Accuracy Assessment, VDI 2634 (2)
Abstract. Structured light systems are popular in part because they can be constructed from off-the-shelf low cost components. In this paper we quantitatively show how common design parameters affect precision and accuracy in such systems, supplying a much needed guide for practitioners. Our quantitative measure is the established VDI/VDE 2634 (Part 2) guideline using precision made calibration artifacts. Experiments are performed on our own structured light setup, consisting of two cameras and a projector. We place our focus on the influence of calibration design parameters, the calibration procedure and encoding strategy and present our findings. Finally, we compare our setup to a state of the art metrology grade commercial scanner. Our results show that comparable, and in some cases better, results can be obtained using the parameter settings determined in this study.