Fig. 1. Schematic of 3D vision sensor based on fringe projection grating phase method

Fig. 2. Complex illumination of measured object surface under real measurement conditions

Fig. 3. Two-dimensional structured light signal aliasing and decomposition model based on single pixel imaging (interreflections as an example)

Fig. 4. Localization technology based on Fourier slice theorem

Fig. 5. The generation of periodic prolongation patterns

Fig. 6. Local region image reconstruction method

Fig. 7. Experimental setup and investigated objects. (a) Experimental setup; (b) metal workpiece; (c) V-shaped metal groove; (d) jade horse; (e) polyamide sphere

Fig. 8. The results of separation of complex illumination by parallel single-pixel imaging. (a) Metal workpiece from the perspective of camera; (b) jade horse from the perspective of camera; (c) the separation of complex illumination of pixel A on the workpiece; (d) the separation of complex illumination of pixel B on the jade horse

Fig. 9. 3D reconstruction results of parallel single-pixel imaging (PSI) and fringe projection profilometry (FPP). (a) 3D reconstruction results of metal workpiece by FPP; (b) 3D reconstruction results of metal workpiece by PSI; (c) 3D reconstruction results of V-shaped metal groove by FPP; (d) 3D reconstruction results of V-shaped metal groove by PSI; (e) 3D reconstruction results of jade horse by FPP; (f) 3D reconstruction results of jade horse by PSI; (g) 3D reconstruction results of polyamide sphere by FPP; (h) 3D reconstruction results polyamide sphere by PSI

Fig. 10. Accuracy analysis for PSI. (a) Accuracy analysis for V-shaped metal groove; (b) accuracy analysis for polyamide sphere