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

Tarquis Alfonso, Ana Maria; Heck, Rj; Grau Olive, Juan Bautista; Fabregat Sisto, Joaquin Angel; Sanchez Oreja, Maria Elena y 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.

Descripción

Título: Influence of thresholding in mass and entropy dimension of 3-D soil images
Autor/es:
  • Tarquis Alfonso, Ana Maria
  • Heck, Rj
  • Grau Olive, Juan Bautista
  • Fabregat Sisto, Joaquin Angel
  • Sanchez Oreja, Maria Elena
  • Antón Corrales, José Manuel
Tipo de Documento: Artículo
Título de Revista/Publicación: Nonlinear Processes In Geophysics
Fecha: Noviembre 2008
Volumen: 15
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Matemática Aplicada a la Ingeniería Agronómica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 2520
Identificador DC: http://oa.upm.es/2520/
Identificador OAI: oai:oa.upm.es:2520
URL Oficial: http://www.nonlin-processes-geophys.net/15/881/2008/
Depositado por: Memoria Investigacion
Depositado el: 11 Mar 2010 12:20
Ultima Modificación: 27 Abr 2016 11:01
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