Fig. 1. Experimental setup

Fig. 2. Reflection model of object surface

Fig. 3. Relationship between intensity and rotation angle of polarizer

Fig. 4. Main procedure of ICA

Fig. 5. Newton iteration algorithm

Fig. 6. Flow chart of experiment

Fig. 7. Distortion fringe image

Fig. 8. Polarization images at different rotation angles. (a) Polarization image at 20°; (b) polarization image at 40°; (c) polarization image at 60°

Fig. 9. Separation images using ICA. (a) Specular components; (b) diffuse components

Fig. 10. Reconstructed result of traditional projected fringe profilometry

Fig. 11. Reconstructed result of ICA algorithm