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Maximum likelihood pixel labeling using a spatially variant finite mixture model

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2 Author(s)
Sanjay Gopal, S. ; Dept. of Radiol., Michigan Univ., Ann Arbor, MI, USA ; Hebert, T.J.

The authors propose a spatially-variant mixture model for pixel labeling. Based on this spatially-variant mixture model they derive an expectation maximization algorithm for maximum likelihood estimation of the pixel labels. While most algorithms using mixture models entail the subsequent use of a Bayes classifier for pixel labeling, the proposed algorithm yields maximum likelihood estimates of the labels themselves and results in unambiguous pixel labels. The proposed algorithm is fast, robust, easy to implement, flexible in that it can be applied to any arbitrary image data where the number of classes is known and, most importantly, obviates the need for an explicit labeling rule. The algorithm is evaluated both quantitatively and qualitatively on simulated data and on clinical magnetic resonance images of the human brain

Published in:

Nuclear Science Symposium, 1996. Conference Record., 1996 IEEE  (Volume:3 )

Date of Conference:

2-9 Nov 1996

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