Influence of thresholding in mass and entropy dimension of 3-D soil images

Tarquis Alfonso, Ana Maria and Heck, Rj and Grau Olive, Juan Bautista and Fabregat Sisto, Joaquin Angel and Sanchez Oreja, Maria Elena and Antón Corrales, José Manuel (2008). Influence of thresholding in mass and entropy dimension of 3-D soil images. "Nonlinear Processes In Geophysics", v. 15 (n. 6); pp. 881-891. ISSN 1023-5809.

Description

Title: Influence of thresholding in mass and entropy dimension of 3-D soil images
Author/s:
  • Tarquis Alfonso, Ana Maria
  • Heck, Rj
  • Grau Olive, Juan Bautista
  • Fabregat Sisto, Joaquin Angel
  • Sanchez Oreja, Maria Elena
  • Antón Corrales, José Manuel
Item Type: Article
Título de Revista/Publicación: Nonlinear Processes In Geophysics
Date: November 2008
ISSN: 1023-5809
Volume: 15
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Matemática Aplicada a la Ingeniería Agronómica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (753kB) | Preview

Abstract

With the advent of modern non-destructive tomography techniques, there have been many attempts to analyze 3-D pore space features mainly concentrating on soil structure. This analysis opens a challenging opportunity to develop techniques for quantifying and describe pore space properties, one of them being fractal analysis. Undisturbed soil samples were collected from four horizons of Brazilian soil and 3-D images at 45μm resolution. Four different threshold criteria were used to transform computed tomography (CT) grey-scale imagery into binary imagery (pore/solid) to estimate their mass fractal dimension (Dm) and entropy dimension (D1). Each threshold criteria had a direct influence on the porosity obtained, varying from 8 to 24% in one of the samples, and on the fractal dimensions. Linear scaling was observed over all the cube sizes, however depending on the range of cube sizes used in the analysis, Dm could vary from 3.00 to 2.20, realizing that the threshold influenced mainly the scaling in the smallest cubes (length of size from 1 to 16 voxels). Dm and D1 showed a logarithmic relation with the apparent porosity in the image, however, the increase of both values respect to porosity defined a characteristic feature for each horizon that can be related to soil texture and depth.

More information

Item ID: 2520
DC Identifier: http://oa.upm.es/2520/
OAI Identifier: oai:oa.upm.es:2520
Official URL: http://www.nonlin-processes-geophys.net/15/881/2008/
Deposited by: Memoria Investigacion
Deposited on: 11 Mar 2010 12:20
Last Modified: 27 Apr 2016 11:01
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM