WinDICOM: A program for determining inclusion shape and orientation

Authors:
Aonghus O'Connor;Kieran F. Mulchrone;Patrick A. Meere
Affiliations:
Department of Geodynamics and Sedimentology, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria;Department of Applied Mathematics, University College Cork, Ireland;Department of Geology, University College Cork, Ireland
Venue:
Computers & Geosciences
Year:
2009

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Abstract

Digital images obtained from X-ray computed tomography scans are analysed for the estimation of inclusion shape and orientation. Three-dimensional computer imagery and segmentation algorithms are used to visualise and isolate the regions of interest. These regions are then approximated by best-fit ellipsoids and the mean best-fit ellipsoid is used as a measure of preferred inclusion orientation. A Windows program is developed to implement these procedures and results found from both manufactured and natural data are presented. These results show that the radiodensity contrast plays a major role in the ability of the software to isolate inclusions from their matrix and hence determine rock fabric.