First International Conference on Recent Advances in 3-D Digital Imaging and Modeling (3DIM '97) Shape Measurement of Discontinuous Objects using Projected Fringes and Temporal Phase Unwrapping Ottawa, Ontario, Canada May 12-May 15 ISBN: 0-8186-7943-3
Abstract: Temporal phase unwrapping is a method of analyzing fringe patterns in which the fringe phase, /spl Phi/, at each pixel is measured and unwrapped as a function of time, t. We propose a method for improving the signal-to-noise ratio of the total phase change by incorporating data from the intermediate phase values. The performance of the method is compared theoretical and experimentally, using data from a fringe projector based on a spatial tight modulator. The best way to use the method is with /spl Phi/ decreasing exponentially with time from its maximum value to zero; this provides significant improvements in reliability, accuracy and computation time compared with the original temporal unwrapping algorithm.
Index Terms:
interferometry; discontinuous objects; projected fringes; temporal phase unwrapping; fringe phase; signal-to-noise ratio; temporal unwrapping; interferograms
Citation:
H.O. Saldner, J.M. Huntley, "Shape Measurement of Discontinuous Objects using Projected Fringes and Temporal Phase Unwrapping," 3dim, pp.44, First International Conference on Recent Advances in 3-D Digital Imaging and Modeling (3DIM '97), 1997 Usage of this product signifies your acceptance of the Terms of Use. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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