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JMIV
2010

Statistical Tests of Anisotropy for Fractional Brownian Textures. Application to Full-field Digital Mammography

13 years 2 months ago
Statistical Tests of Anisotropy for Fractional Brownian Textures. Application to Full-field Digital Mammography
In this paper, we propose a new and generic methodology for the analysis of texture anisotropy. The methodology is based on the stochastic modeling of textures by anisotropic fractional Brownian fields. It includes original statistical tests that permit to determine whether a texture is anisotropic or not. These tests are based on the estimation of directional parameters of the fields by generalized quadratic variations. Their construction is founded on a new theoretical result about the convergence of test statistics, which is proved in the paper. The methodology is applied to simulated data and discussed. We show that on a database composed of 116 full-field digital mammograms, about 60 percent of textures can be considered as anisotropic with a high level of confidence. These empirical results strongly suggest that anisotropic fractional Brownian fields are better-suited than the commonly used fractional Brownian fields to the modeling of mammogram textures.
Frédéric J. P. Richard, Hermine Bier
Added 28 Jan 2011
Updated 28 Jan 2011
Type Journal
Year 2010
Where JMIV
Authors Frédéric J. P. Richard, Hermine Bierme
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