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Color Influence on Accuracy of 3D Scanners Based on Structured Light

Summary: Color Influence on Accuracy of 3D Scanners Based on
Structured Light
Sophie Voisina b, David L. Pageb, Sebti Foufoua, FrŽedŽeric Truchetetc and Mongi A.Abidib
aIRIS Lab, Electrical & Computer Engineering Dpt, The University of Tennessee, 1508 Middle
Drive, Knoxville, TN, USA;
bLaboratoire Le2i UMR CNRS 5158, UniversitŽe de Bourgogne, FacultŽe Mirande, Dijon, France;
cLaboratoire Le2i UMR CNRS 5158, IUT Le Creusot, 12 rue de la Fonderie , Le Creusot,
The characterization of commercial 3D scanners allows acquiring precise and useful data. The accuracy of range
and, more recently, color for 3D scanners is usually studied separately, but when the 3D scanner is based on
structured light with a color coding pattern, color influence on range accuracy should be investigated. The
commercial product that we have tested has the particularity that it can acquire data under ambient light
instead of a controlled environment as it is with most available scanners. Therefore, based on related work in the
literature and on experiments we have done on a variety of standard illuminants, we have designed an interesting
setup to control illuminant interference. Basically, the setup consists of acquiring the well-known Macbeth
ColorChecker under a controlled environment and also ambient daylight. The results have shown variations with
respect to the color. We have performed several statistical studies to show how the range results evolve with
respect to the RGB and the HSV channels. In addition, a systematic noise error has also been identified. This
noise depends on the object color. A subset of colors shows strong noise errors while other colors have minimal


Source: Abidi, Mongi A. - Department of Electrical and Computer Engineering, University of Tennessee


Collections: Computer Technologies and Information Sciences