气候变化领域集成服务门户(CCPortal): On Representative Elementary Volumes of Grayscale Micro-CT Images of Porous Media

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DOI	10.1029/2020GL088594
	On Representative Elementary Volumes of Grayscale Micro-CT Images of Porous Media
	Singh A.; Regenauer-Lieb K.; Walsh S.D.C.; Armstrong R.T.; van Griethuysen J.J.M.; Mostaghimi P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	The concept of linking pore-scale data to continuum-scale characteristics of porous media relies on the existence of a representative elementary volume (REV). The current techniques for estimating REVs require access to segmented micro-computed tomographic (micro-CT) images and computations of petrophysical properties which are computationally intensive and time-consuming. Herein, a texture characterization method called the Gray-Level Size Zone Matrix (GLSZM) is applied directly to raw grayscale micro-CT images. GLSZM representations of 3D micro-CT images capture information regarding the connectivity of gray-level intensities, termed as “size-zones.” Statistical descriptors of pore space are calculated based on GLSZM to understand the connectivity of low gray-level intensities. These GLSZM statistics capture microstructural fluctuations and offer insights into the impact of grayscale heterogeneity on REV size. This approach allows REV sizes to be estimated directly using grayscale micro-CT images, in a reproducible, less time-consuming and computationally efficient manner. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Petrophysics; Porous materials; Textures; Computationally efficient; Computed tomographic; Gray level intensity; Gray level size zone matrixes (GLSZM); Petrophysical properties; Representative elementary volume; Statistical descriptors; Texture characterizations; Computerized tomography; computer simulation; connectivity; estimation method; heterogeneity; microstructure; pore space; porous medium; texture
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169952
作者单位	School of Minerals and Energy Resources Engineering, The University of New South Wales, Sydney, Australia; Department of Civil Engineering, Monash University, Melbourne, Australia; Department of Radiology, The Netherlands Cancer Institute, Amsterdam, Netherlands; GROW School for Oncology and Development Biology, Maastricht University, Maastricht, Netherlands
推荐引用方式 GB/T 7714	Singh A.,Regenauer-Lieb K.,Walsh S.D.C.,et al. On Representative Elementary Volumes of Grayscale Micro-CT Images of Porous Media[J],2020,47(15).
APA	Singh A.,Regenauer-Lieb K.,Walsh S.D.C.,Armstrong R.T.,van Griethuysen J.J.M.,&Mostaghimi P..(2020).On Representative Elementary Volumes of Grayscale Micro-CT Images of Porous Media.Geophysical Research Letters,47(15).
MLA	Singh A.,et al."On Representative Elementary Volumes of Grayscale Micro-CT Images of Porous Media".Geophysical Research Letters 47.15(2020).