Calibration of Fringe Projection Three-Dimensional Measurement System

Fig. 7. Example of 3D shape measurement of complex object. (a) One of phase-shifted fringe patterns; (b) one of phase-encoded patterns; (c) 3D reconstructed shape

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Table 1. Intrinsic parameter matrice of 3D measurement system obtained by two methods
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Table 1. Intrinsic parameter matrice of 3D measurement system obtained by two methods
Method Camera Projector
Proposed method $\begin{matrix} [\begin{matrix} 2146.472 & 0 & 654.360 \\ 0 & 2146.472 & 483.264 \\ 0 & 0 & 1 \end{matrix}] \end{matrix}$ $\begin{matrix} [\begin{matrix} 1515.965 & 0 & 512.264 \\ 0 & 1515.965 & 717.806 \\ 0 & 0 & 1 \end{matrix}] \end{matrix}$
Method in Ref. [10] $\begin{matrix} [\begin{matrix} 2165.959 & 0 & 648.973 \\ 0 & 2165.959 & 489.012 \\ 0 & 0 & 1 \end{matrix}] \end{matrix}$ $\begin{matrix} [\begin{matrix} 1512.733 & 0 & 512.578 \\ 0 & 1512.733 & 713.046 \\ 0 & 0 & 1 \end{matrix}] \end{matrix}$

Table 2. Distortion coefficients calibrated by two methods
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Table 2. Distortion coefficients calibrated by two methods
Method Device Radial distortion coefficient
Proposed method Camera -0.1106 0.17976 -0.0720
Projector 0.1260 -0.36680 0.2629
Method in Ref. [10] Camera -0.1542 0.21620 -0.2499
Projector 0.1377 -0.40140 0.2716

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Nian Xu, Jianwei Wu, Xiaobao Wei. Calibration of Fringe Projection Three-Dimensional Measurement System[J]. Laser & Optoelectronics Progress, 2020, 57(1): 011202

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