NASA NTRS · 19940035167
Geometric moire methods with enhanced sensitivity by optical/digital fringe multiplication
Abstract
A robust fringe-shifting and image processing scheme is applied to geometric moire experiments. High quality contour maps of U, V and W displacement fields are obtained with sensitivity enhanced by a factor of ten. The method is compatible with complicated intensity distributions, variable bar-to-space ratios of gratings, and optical noise. It is applicable to large fields for both in-plane moire and shadow moire measurements.
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Han, B., Ifju, P., Post, D.. 1993-09-01. Geometric moire methods with enhanced sensitivity by optical/digital fringe multiplication. https://ntrs.nasa.gov/citations/19940035167
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