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7 April 2004 Two-spacing projection phase stepping interferometry for 3D-surface measurements of large-scale objects
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Abstract
A precise interferometric method for three-dimensional shape measurements in a wide dynamic range with double symmetrical illumination of the objects is presented. The technique proposed is especially useful for remote, non-destructive in-situ measurements of art and archaeological objects. The method is based on projection two-spacing phase-stepping interferometry. The theoretical approach, experimental results as well as a sensitivity assessment of the measurements are discussed.
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Jana Harizanova and Ventseslav Christov Sainov "Two-spacing projection phase stepping interferometry for 3D-surface measurements of large-scale objects", Proc. SPIE 5478, Laser Optics 2003: Solid State Lasers and Nonlinear Frequency Conversion, (7 April 2004); https://doi.org/10.1117/12.560987
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