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Diffraction by image processing and its application in materials science

: Ohser, J.; Schladitz, K.; Koch, K.; Nöthe, M.

Zeitschrift für Metallkunde 96 (2005), Nr.7, S.731-737
ISSN: 0044-3093
ISSN: 0179-4841
Fraunhofer ITWM ()

A spectral theory for constituents of macroscopically homogeneous random microstructures is developed and provided with a sound mathematical basis, where the spectrum obtained by Fourier methods corresponds to the angular intensity distribution of X-rays scattered by this constituent. It is shown that the fast Fourier transform applied to three-dimensional images of microstructures obtained by micro-tomography is a powerful tool of image processing. The applicability of this technique is demonstrated in the analysis of images of porous media.