Three-dimensional shape reconstruction by phase-shifting shadow moire.

@article{Mauvoisin1994ThreedimensionalSR,
  title={Three-dimensional shape reconstruction by phase-shifting shadow moire.},
  author={G{\'e}rard Mauvoisin and F Br{\'e}mand and A C Lagarde},
  journal={Applied optics},
  year={1994},
  volume={33 11},
  pages={2163-9}
}
Shadow moiré shows contour lines of an object with respect to a master grating plane; they result from the interference between the lines of the master grid and their shadow projected by a point source of light. In best cases the sensitivity of this procedure is a few tenths of a millimeter. The introduction of a phase-shifting procedure gives a better resolution, but the problem in practice is how can we shift the phase of the interferogram into shadow moiré? A complete study is presented… CONTINUE READING
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