Measurements Of Microdisplacements By Holographic Digital Image Processing

Ri. Peralta-Fabi

doi:10.1117/12.935371

26 October 1983 Measurements Of Microdisplacements By Holographic Digital Image Processing

Ri. Peralta-Fabi

Proceedings Volume 0398, Industrial Applications of Laser Technology; (1983) https://doi.org/10.1117/12.935371
Event: 1983 International Technical Conference/Europe, 1983, Geneva, Switzerland

Abstract

This paper is concerned with an automatic method designed to produce a series of holographic interferograms that contain the history of surface displacements of a material undergoing a deformation process. The purpose of automatic control of the hologram formation stage, is to insure that every interferogram displays similar fringe patterns, which can then be analyzed by another automatic setup for fringe counting based on digital processing of the holographic images. The formation parameters are supervised by a microcomputer that effects a decision of the exposure time. With this approach, it is possible to follow a dynamic phenomena and to produce measurements of statistical significance which, when expressed in terms of distributions, can help characterize the response behaviour of complex structured materials.

Citation Download Citation

Ri. Peralta-Fabi "Measurements Of Microdisplacements By Holographic Digital Image Processing", Proc. SPIE 0398, Industrial Applications of Laser Technology, (26 October 1983); https://doi.org/10.1117/12.935371

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