International Journal of Computer Vision

, Volume 33, Issue 1, pp 73–86

Calibrating a Structured Light Stripe System: A Novel Approach

  • D.Q. Huynh
  • R.A. Owens
  • P.E. Hartmann
Article

DOI: 10.1023/A:1008117315311

Cite this article as:
Huynh, D., Owens, R. & Hartmann, P. International Journal of Computer Vision (1999) 33: 73. doi:10.1023/A:1008117315311

Abstract

The problem associated with calibrating a structured light stripe system is that known world points on the calibration target do not normally fall onto every light stripe plane illuminated from the projector. We present in this paper a novel calibration method that employs the invariance of the cross ratio to overcome this problem. Using 4 known non-coplanar sets of 3 collinear world points and with no prior knowledge of the perspective projection matrix of the camera, we show that world points lying on each light stripe plane can be computed. Furthermore, by incorporating the homography between the light stripe and image planes, the 4 × 3 image-to-world transformation matrix for each stripe plane can also be recovered. The experiments conducted suggest that this novel calibration method is robust, economical, and is applicable to many dense shape reconstruction tasks.

calibrationprojectivityshape measurementactive stereotriangulation

Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • D.Q. Huynh
    • 1
  • R.A. Owens
    • 2
  • P.E. Hartmann
    • 3
  1. 1.School of Information TechnologyMurdoch UniversityPerth WAAustralia
  2. 2.The University of Western AustraliaPerthAustralia
  3. 3.Department of BiochemistryThe University of Western AustraliaPerthAustralia