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Proceedings Paper

Flexible calibration method for fringe projection profilometry system using spheres
Author(s): Jian Yu; Feipeng Da; Chenxing Wang; Shaoyan Gai
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Paper Abstract

A newly developed flexible calibration algorithm for fringe projection profilometry system is presented in this paper. Previous studies have exploited images of spheres to calibrate the camera. It is shown in this paper that this approach can be improved to suit for the projector and ultimately achieve the overall calibration of FPP (Fringe Projection Profilometry) system. Taking the projector as a virtual camera, the images of sphere contour on the projectors plane can also be obtained through the phase information. The derivation and acquisition of intrinsic parameters for projector are just the same way used in the camera. In our algorithm, at least 3 images of sphere contour on both camera and projector are obtained to calculate the homography between these two views. Then the image of the sphere and its shadow on an induced plane settled in the back of the sphere are added to recover the epipolar geometry for the FPP system. Experimental results on real data are presented, which demonstrate the feasibility and accuracy achieved by our proposed algorithm.

Paper Details

Date Published: 16 October 2019
PDF: 6 pages
Proc. SPIE 11205, Seventh International Conference on Optical and Photonic Engineering (icOPEN 2019), 112051P (16 October 2019); doi: 10.1117/12.2541705
Show Author Affiliations
Jian Yu, Southeast Univ. (China)
Feipeng Da, Southeast Univ. (China)
Chenxing Wang, Southeast Univ. (China)
Shaoyan Gai, Southeast Univ. (China)

Published in SPIE Proceedings Vol. 11205:
Seventh International Conference on Optical and Photonic Engineering (icOPEN 2019)
Anand Asundi; Motoharu Fujigaki; Huimin Xie; Qican Zhang; Song Zhang; Jianguo Zhu; Qian Kemao, Editor(s)

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