Pore segmentation of cement-based materials from backscattered electron images

Journal Article · Thu Jun 15 00:00:00 EDT 2006 · Cement and Concrete Research

DOI:https://doi.org/10.1016/j.cemconres.2005.10.006· OSTI ID:20871556

Wong, H S ^[1]; Head, M K ^[1]; Buenfeld, N R ^[1]

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1. Department of Civil and Environmental Engineering, Imperial College London, Imperial College Road, London SW7 2AZ (United Kingdom)

A technique to segment pores from a normal backscattered electron (BSE) image of cement-based materials is presented. The upper threshold grey level for porosity is determined from the inflection point of the cumulative brightness histogram of the BSE image. This represents a critical point where a small incremental grey value will cause a sudden increase in thresholded area, a condition termed as overflow. The proposed technique was found to be more consistent and reliable than existing methods. Significantly fewer images are required to achieve a satisfactory level of statistical confidence for quantifying porosity.

• OSTI ID: 20871556
• Journal Information: Cement and Concrete Research, Vol. 36, Issue 6; Other Information: DOI: 10.1016/j.cemconres.2005.10.006; PII: S0008-8846(05)00238-3; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0008-8846
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BRIGHTNESS
CEMENTS
ELECTRONS
IMAGES
MICROSTRUCTURE
POROSITY
SCANNING ELECTRON MICROSCOPY