Fig. 1. Model diagram of measurement system

Fig. 2. Four-step phase-shifting method for solving wrapped phase diagram. (a) Phase shift 0 rad; (b) Phase shift π/2 rad; (c) Phase shift π rad; (d) Phase shift 3π/2 rad; (e) Results of phase shift

Fig. 3. Schematic diagram of complementary Gray code

Fig. 4. Absolute phase diagram

Fig. 5. Checkerboard pattern

Fig. 6. Flowchar diagram of camera-projector calibration

Fig. 7. Coordinate transformation mode

Fig. 8. Composition of experimental system

Fig. 9. Image of turntable calibration fitting. (a) Checkerboard corners fitting the plane; (b) Checkerboard corners fitting the ellipse

Fig. 10. Splicing result. (a) Partial splicing details; (b) Global stitching result