PRECISION AND ACCURACY PARAMETERS IN STRUCTURED LIGHT 3-D SCANNING

• Published in: International archives of the photogrammetry, remote sensing and spatial information sciences. Vol. XL-5/W8; pp. 7 - 15
• Main Authors: Eiríksson, E. R., Wilm, J., Pedersen, D. B., Aanæs, H.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Gottingen Copernicus GmbH 07-04-2016; Copernicus Publications
• Subjects: Accuracy; Calibration; Cameras; Construction costs; Design parameters; Light; Parameters; Quality
• ISSN: 2194-9034; 1682-1750; 2194-9034
• DOI: 10.5194/isprs-archives-XL-5-W8-7-2016

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.