Camera-Projector Calibration Methods with Compensation of Geometric Distortions in Fringe Projection Profilometry: A Comparative Study
R. Vargas, A. G. Marrugo, J. Pineda, J. Meneses, L. Romero
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Base Information
Volume
V51 - N3 / 2018 Ordinario
Reference
50305:1-10
DOI
http://doi.org/10.7149/OPA.51.3.50305
Language
English
Keywords
Fringe projection, stereo-vision, lens geometric distortions, polynomial calibration.
Abstract
The calibration methods most used in fringe projection profilometry are based on models of least squares adjustment and stereo vision techniques. However, the geometric distortions of the projector and camera lenses introduce imprecision in certain regions of the 3D reconstruction. In this paper, we perform a comparative study between the second order polynomial adjustment method and the stereo calibration method applying lens distortion compensation. The experimental results show that in the stereo calibration the incidence of the distortions in the 3D reconstruction is significant. In contrast, in the proposed polynomial calibration, reconstruction errors are associated with the calibrated volume, typically low within the calibration volume.
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