Hologram interferometry using PSALM

Anand Krishna Asundi

doi:10.1117/12.135316

1 January 1992 Hologram interferometry using PSALM

Anand Krishna Asundi

Proceedings Volume 1553, Laser Interferometry IV: Computer-Aided Interferometry; (1992) https://doi.org/10.1117/12.135316
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

Phase shifting and logical moire (PSALM) is used to process fringes obtained by holographic interferometry. A moire is generated between the holographic pattern and a computer generated reference via logical operations. The computer grating is shifted to give the required number of shifted patterns to solve for the unknown deformation induced phase. Comparison with FFT is demonstrated.

Citation Download Citation

Anand Krishna Asundi "Hologram interferometry using PSALM", Proc. SPIE 1553, Laser Interferometry IV: Computer-Aided Interferometry, (1 January 1992); https://doi.org/10.1117/12.135316

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