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Simple spatial filtering for shearograms
Authors:P A Klumpp
Abstract:The spatial frequency spectrum of shearographic speckle patterns is analysed. Shearogram reconstruction with high contrast fringes is possible using spatial filters adapted to the spectrum. This filtering is not only possible in Fourier processing set-ups, but also can be easily realized with a camera and a white light source.
Keywords:speckle  shearography  fringes  spatial filtering
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