Image segmentation for phase-contrast hard X-ray CMT of C/C composites

In the aim of producing high-quality discretized 3D images of the porous architecture of C/C composites. computerized microtomographs have been acquired with synchrotron radiation X-rays. Due to the weak X-ray absorption coefficient of carbon, the result of acquisition at 2 or 1 mum resolution are phase contrast images, not usable us such for the evaluation of geometrical or transport properties. We present here an image treatment algorithm designed to overcome this inconvenience. (C) 2001 Elsevier Science Ltd. All rights reserved.