[Insight-users] ExpectationMaximizationMixtureModelEstimator with ImageToListSampleAdaptor
David Doria
daviddoria at gmail.com
Mon Nov 22 10:29:12 EST 2010
Has anyone used ExpectationMaximizationMixtureModelEstimator to
classify image pixels?
I tried to do so here:
http://www.vtk.org/Wiki/ITK/Examples/Broken/Statistics/ExpectationMaximizationMixtureModelEstimator_Image
But the cluster proportions end up as NaN:
Cluster[0]
Parameters:
[0, 0, 0, 5, 5, 5, 5, 5, 5, 5, 5, 5]
Proportion: -nan
....
I create a demo image consisting of only black, red, and green pixels.
Therefore, I set the number of classes to 3, expecting each one of
these colors to get its own class. I set the estimator to 12 variables
(3 for means and 9 for 3x3 covariance).
Would anyone mind skimming this example to make sure I haven't done
something silly? Any other comments?
Thanks,
David
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