Xin Yu, Shanshan Lai, Yuankun Liu, Wenjing Chen, Junpeng Xue, Qican Zhang. Generic nonlinear error compensation algorithm for phase measuring profilometry[J]. Chinese Optics Letters, 2021, 19(10): 101201
- Chinese Optics Letters
- Vol. 19, Issue 10, 101201 (2021)
Fig. 1. Fringe projection system.
Fig. 2. Nonlinear effect for (a) the wrapped phase and (b) the PDF curves.
Fig. 3. In the cases of different values of M: (a) PDF curves and (b) partial phase sampling regions.
Fig. 4. Process of finding K2 and compensation.
Fig. 5. Measurement results: (a) captured fringe image, (b) the real PDF, (c) the comparison result of real and simulated PDF curves, and (d) the correlation curve.
Fig. 6. Comparisons of these two methods: (a) the residual phase error and (b) the PDF curves.
Fig. 7. Measurement results of a pulp mask: (a) without compensation, (b) compensated by our previous work, and (c) compensated by the proposed method.
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Table 1. Quantitative Comparison Results of the Measurement by Two Methods
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Table 2. Quantitative Comparison Results of the Object Measurement by Two Methods
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