A Pitch-variation Moire Fringes Method of Temporal Phase Unwrapping Profilometry
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TB863 TB96

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    Abstract:

    A method of pitch-variation moire fringes is proposed to realize the temporal phase unwrapping for three-dimensional profilometry. On the basis of the principle of moire pattern, we achieve variable spatial frequencies of fringes in a moire pattern by rotating two gratings. Furthermore a five-point fitting method is used to automatically compute the central position of side-lobe spectrum of the moire fringes. Finally, a generalized temporal phase unwrapping algorithm is introduced to process the three-dimensional reconstruction. The theoretical analysis and experimental results show the validity of the proposed method.

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Tian Jin-dong, Peng Xiang, Zhao Xiao-bo. A Pitch-variation Moire Fringes Method of Temporal Phase Unwrapping Profilometry[J]. Optoelectronics Letters,2007,3(3):215-218

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  • Received:March 30,2007
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