Least-squares calibration method for fringe projection profilometry

Hongwei Guo; Haitao He; Yingjie Yu; Mingyi Chen

doi:10.1117/1.1871832

1 March 2005 Least-squares calibration method for fringe projection profilometry

Hongwei Guo, Haitao He, Yingjie Yu, Mingyi Chen

Author Affiliations +

Optical Engineering, Vol. 44, Issue 3, 033603 (March 2005). https://doi.org/10.1117/1.1871832

Abstract

This paper presents a novel calibration approach for determining the mapping relationship between the depth map and the phase difference in fringe projection profilometry. This approach is based on a simple nonlinear function, which is deduced by analyzing the geometry of measurement system and hence perfectly describes the mapping between the depth map and the phase-difference distribution. The calibration is implemented by translating a target plane to a sequence of given positions with known depths, and measuring its phase distributions. A least-squares estimation algorithm with linear computation is deduced to retrieve the related parameters and to reconstruct the mapping function. Both computer simulation and experiment are carried out to demonstrate the validity of this technique.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Hongwei Guo, Haitao He, Yingjie Yu, and Mingyi Chen "Least-squares calibration method for fringe projection profilometry," Optical Engineering 44(3), 033603 (1 March 2005). https://doi.org/10.1117/1.1871832

Published: 1 March 2005

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