Yuting Chen, Yiping Cao, Cheng Chen, Yingying Wan, Guangkai Fu, Yapin Wang, Lu Wang. Phase Measurement Profilometry Based on Binary Gratings with Unequal Duty Cycle[J]. Acta Optica Sinica, 2018, 38(8): 0815021
- Acta Optica Sinica
- Vol. 38, Issue 8, 0815021 (2018)
Fig. 1. Optical diagram of PMP
Fig. 2. Binary grating and grayscale distribution. (a) Binary grating; (b) grayscale distribution profile
Fig. 3. Complete extraction process of sinusoidal distribution pattern
Fig. 4. Phase shift of gratings. (a) Binary gratings I1 and I2; (b) grayscale distribution profiles of I1 and I2; (c) sinusoidal gratings S1 and S2; (d) grayscale distribution profiles of S1 and S2
Fig. 5. Schematic of experimental setup
Fig. 6. Measured heart-shaped object
Fig. 7. Reconstruction of 3D shape of object. (a) Binary deformed image of I; (b) spectral distribution of I; (c) sinusoidal deformed image obtained by extraction; (d) reconstruction of 3D shape
Fig. 8. Reconstruction results. (a) Proposed method; (b) traditional PMP method; (c) FTP method; (d) distribution profile of Fig. 8(a); (e) distribution profile of Fig. 8(b); (f) distribution profile of Fig. 8(c)
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Table 1. Measurement results of known height planesmm
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