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Proceedings Paper

Image Processing, Of Digitized Diffractographic Profile Data
Author(s): Alexander C. Livans; Hsi-Ping Liu
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Paper Abstract

A two dimensional diffractographic technique has been developed, the purpose of which is to determine exactly the displacement and profile changes of the test object as a function of time To illustrate this process we have mapped continuously until failure the profile of a cylindrical rock sample. The resulting diffraction patterns have been recorded on film and processed digitally. It is shown that under certain conditions the interpretation of the two dimensional patterns is a spatial Fourier transform in the small dimension, amplitude modulated by Fresnel diffraction of the large one. This interpretation results in efficient and simple digital processing using conventional interpolation and filtering techniqueso thus reconstructing the profile and time history of the event with a typical strain resolution of 10-5.

Paper Details

Date Published: 9 July 1976
PDF: 12 pages
Proc. SPIE 0074, Image Processing, (9 July 1976); doi: 10.1117/12.954716
Show Author Affiliations
Alexander C. Livans, California Institute of Technology (United States)
Hsi-Ping Liu, California Institute of Technology (United States)

Published in SPIE Proceedings Vol. 0074:
Image Processing
John C. Urbach, Editor(s)

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