14 September 2007 Three-dimensional imaging with acousto-optic fringe projector and piecewise temporal phase unwrapping
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We report an approach for three-dimensional (3D) imaging with use of acousto-optic fringe projector (AOFP) and a technique of piecewise temporal phase unwrapping. The AOFP is controlled by direct digital synthesizer to generate a sequence of fringe patterns with different spatial frequencies so that encoding with variable sensitivity can be realized. Furthermore, we present a new phase unwrapping strategy for incremental phase reconstruction with the level of details. The algorithm is developed as a piecewise temporal phase unwrapping with a tolerance of deviation from the condition imposed upon conventional temporal phase unwrapping technique. Preliminary experiment results are given to support proposed approach.
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Jindong Tian, Jindong Tian, Xiaobo Zhao, Xiaobo Zhao, Xiaoli Liu, Xiaoli Liu, Xiang Peng, Xiang Peng, } "Three-dimensional imaging with acousto-optic fringe projector and piecewise temporal phase unwrapping", Proc. SPIE 6671, Optical Manufacturing and Testing VII, 66711B (14 September 2007); doi: 10.1117/12.733621; https://doi.org/10.1117/12.733621

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