Comparison of several calibration methods for fringe projection profilometry

Antonio Muñoz; Jorge L. Flores; Moises Jaber; Omar Aguilar-Loreto

doi:10.1117/12.2567671

20 August 2020 Comparison of several calibration methods for fringe projection profilometry

Antonio Muñoz, Jorge L. Flores, Moises Jaber, Omar Aguilar-Loreto

Proceedings Volume 11502, Infrared Remote Sensing and Instrumentation XXVIII; 115020P (2020) https://doi.org/10.1117/12.2567671
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Conference Poster

Abstract

In three-dimensional shape measurement by fringe projection, the calibration of the measurement system is an essential procedure to determine the relationship between the retrieval phase and the object height. In this work, we present an analysis of three calibration methods that had been proposed in the literature. These are based on three mathematical models: linear, quadratic and nonlinear. The linear and nonlinear mathematical models were deduced from the geometry of the measurement system, and parameters of the model were estimated by employing the ordinary least-squares method. The implementation of this calibration method was performed by translating a reference plane at different positions with known depths. The measurement accuracy for these three models was compared by numerical simulations, and the nonlinear model was employed to measure data.

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Antonio Muñoz, Jorge L. Flores, Moises Jaber, and Omar Aguilar-Loreto "Comparison of several calibration methods for fringe projection profilometry", Proc. SPIE 11502, Infrared Remote Sensing and Instrumentation XXVIII, 115020P (20 August 2020); https://doi.org/10.1117/12.2567671

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