Projection moire using PSALM

Anand Krishna Asundi

doi:10.1117/12.57495

1 December 1991 Projection moiré using PSALM

Anand Krishna Asundi

Proceedings Volume 1554, Second International Conference on Photomechanics and Speckle Metrology; (1991) https://doi.org/10.1117/12.57495
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

Phase Shifting And Logical Moiré (PSALM) is used to analyse projected gratings for profiling the topography of the object. Moiré fringes are generated through logical operations on the digitized image of the projected grating with a computer generated reference. Phase shifting is achieved by translating the reference grating. This enables profiles to be determined easily and with good sensitivity.

Citation Download Citation

Anand Krishna Asundi "Projection moiré using PSALM", Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); https://doi.org/10.1117/12.57495

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