Volumetric Texture Segmentation by Discriminant Feature Selection and Multiresolution Classification

Reyes Aldasoro, Constantino C and Bhalerao, A (2007) Volumetric Texture Segmentation by Discriminant Feature Selection and Multiresolution Classification. IEEE Transactions on Medical Imaging, 26 (1). pp. 1-14. ISSN 0278-0062

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In this paper, a multiresolution volumetric texture segmentation (M-VTS) algorithm is presented. The method extracts textural measurements from the Fourier domain of the data via subband filtering using an orientation pyramid (Wilson and Spann, 1988). A novel Bhattacharyya space, based on the Bhattacharyya distance, is proposed for selecting the most discriminant measurements and producing a compact feature space. An oct tree is built of the multivariate features space and a chosen level at a lower spatial resolution is first classified. The classified voxel labels are then projected to lower levels of the tree where a boundary refinement procedure is performed with a three-dimensional (3-D) equivalent of butterfly filters. The algorithm was tested with 3-D artificial data and three magnetic resonance imaging sets of human knees with encouraging results. The regions segmented from the knees correspond to anatomical structures that can be used as a starting point for other measurements such as cartilage extraction.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Constantino Reyes Aldasoro
Date Deposited: 06 Feb 2012 21:09
Last Modified: 30 Nov 2012 17:09
URI: http://sro.sussex.ac.uk/id/eprint/29828
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