Fig. 1. Measurement system of phase-shift profilometry

Fig. 2. System composition block diagram

Fig. 3. Architecture of embedded 3D measurement system

Fig. 4. Phase demodulation module

Fig. 5. Calculation results of wrapped phase. (a) Captured phase shift image; (b) whole field wrapped phase; (c) local wrapped phase

Fig. 6. Schematic diagram of complementary Gray-code

Fig. 7. Phase unwrapping module

Fig. 8. Calculation results of unwrapped phase. (a) Whole field unwrapped phase; (b) local unwrapped phase

Fig. 9. Phase-depth mapping module

Fig. 10. Without pipelining

Fig. 11. With pipelining

Fig. 12. Embedded structured light 3D measurement system

Fig. 13. Measurement results. (a) Nose model; (b) portrait model Ⅰ; (c) portrait model Ⅱ; (d) plane

Fig. 14. Histogram of error between measurement results of the proposed method and that of Matlab

Fig. 15. Error in plane fitting