5 September 2014 Design of the binary-encoded fringe pattern for projected fringe profilometr
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An approach using lithography techniques to fabricate a binary-encoded fringe pattern for projected fringe profilometry is described. The sinusoidal fringes are spatially encoded with a stream of binary stripes. Phase unwrapping is then performed based on the transmittance of the binary stripes. The period of the binary stripes can be enlarged by increasing the length of the encoded stream. Its tolerance of phase unwrapping is therefore increased. Advantages of the fringe pattern for phase unwrapping include (1) reliable performance for colorful objects, (2) unwrapped errors only confined in a local area, and (3) low computation cost..
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Wei-Hung Su, Wei-Hung Su, "Design of the binary-encoded fringe pattern for projected fringe profilometr", Proc. SPIE 9200, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VIII, 92001H (5 September 2014); doi: 10.1117/12.2064305; https://doi.org/10.1117/12.2064305

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