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    Multi-level Spiral Phase Filtering in Speckle Interferometry Using Spatial Light Modulators

    Electronic speckle pattern interferometry (ESPI) is widely used for displacement, stress and strain measurement [1]. Recently the introduction of Spatial Light Modulators (SLM), has allowed versatile optical s...

    Alberto Aguilar, Abundio Dávila, Enrique Landgrave in Fringe 2013 (2014)