Try gaussian mixture modelling an image of some Chinese characters. Can you use the same trick of describing the gaussians by computing gaussians for them (UpWriting) in order to tell different characters apart?
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A.P. Dempster, N.M. Laird and D.B. Rubin, Maximum Likelihood from Incomplete Data via the EM Algorithm,Proc.Roy.Stat.Soc., 1, 1977.
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