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Unsupervised segmentation of dual-echo MR images by a sequentially learned Gaussian mixture model
Conference paper   Open access

Unsupervised segmentation of dual-echo MR images by a sequentially learned Gaussian mixture model

W. Li, M. Morrison and Y. Attikiouzel
Proceedings., International Conference on Image Processing, Vol.3, pp.576-579
IEEE
Proceedings of the International Conference on Image Processing (Washington, DC, USA, 26/10/1995–23/10/1995)
1995
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Abstract

This paper proposes a method for unsupervised segmentation of brain tissues from dual-echo MR images without any prior knowledge about the number of tissues and their density distributions on each MRI echo. The brain tissues are described by a finite Gaussian mixture model (FGMM). The FGMM parameters are learned by sequentially applying the expectation maximization (EM) algorithm to a stream of data sets which are specifically organized according to the global spatial relationship of the brain tissues. Preliminary results on actual MRI slices have shown the method to be promising.

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