By using the least-squares fitting approach, the calibration procedure for fringe projection profilometry becomes more flexible and easier, since neither the measurement of system geometric parameters nor precise control of plane moving is required. With consideration of camera lens distortion, we propose a modified least-squares calibration method for fringe projection profilometry. In this method, camera lens distortion is involved in the mathematical description of the system for least-squares fitting to reduce its influence. Both simulation and experimental results are shown to verify the validity and ease of use of this modified calibration method.
© 2010 Optical Society of America
Original Manuscript: September 22, 2009
Revised Manuscript: November 1, 2009
Manuscript Accepted: November 1, 2009
Published: March 11, 2010
Lei Huang, Patrick S. K. Chua, and A. Asundi, "Least-squares calibration method for fringe projection profilometry considering camera lens distortion," Appl. Opt. 49, 1539-1548 (2010)