Fig. 1. Optical schematic diagram of mirror-assisted FPP measurement system

Fig. 2. (a) Traditional FPP measurement system ; (b) Mirror-assisted FPP measurement system

Fig. 3. (a) Standard step model; (b) Fringe projection image of the step model ; (c) 3D profile of the standard step model

Fig. 4. 3D point cloud of the step plane. (a) Step plane A; (b) Step plane B; (c) Step plane C; (d) Step plane D; (e) Step plane E; (f) Step plane F

Fig. 5. Histogram of error distribution of step plane. (a) Step plane A; (b) Step plane B; (c) Step plane C; (d) Step plane D; (e) Step plane E; (f) Step plane F

Fig. 6. Fitted RMSE of step plane

Fig. 7. (a) Fringe image captured by the traditional FPP system; (b) Fringe image captured by the mirror-assisted FPP system; (c) Absolute phase map measured by the traditional FPP system; (d) Absolute phase map measured by the mirror-assisted FPP system

Fig. 8. Measurement results of 3D profile of table tennis surface. (a) Traditional FPP system; (b) Mirror-assisted FPP system