Fig. 1. Illumination model of highly reflective object surface

Fig. 2. Phase calculation process

Fig. 3. Coded binary images

Fig. 4. Comparison of intensity error between standard sinusoidal stripes and half-period sinusoidal fringes. (a) Standard sinusoidal fringe and half-period sinusoidal fringe; (b) superimposed intensity error

Fig. 5. Multi-exposure images fusion results

Fig. 6. Standard sphere comparison results. (a) Parcel phase solved by four-step phase shift method; (b) parcel phase solved by proposed method combined with four-step phase shift method; (c) small ball reconstructed by four-step phase shift method; (d) small ball reconstructed by proposed method combined with four-step phase shift method

Fig. 7. Measurement results of stainless steel workpiece. (a) Captured fringes; (b) point cloud data; (c) reconstruction results

Fig. 8. Measurement results of metal flange. (a) Captured fringes; (b) point cloud data; (c) reconstruction results

Fig. 9. Measurement results of ceramic cup. (a) Captured fringes; (b) absolute phases; (c) absolute phases at the dotted line; (d) point cloud data