Unsupervised lip segmentation under natural conditions

@inproceedings{Livin1999UnsupervisedLS,
  title={Unsupervised lip segmentation under natural conditions},
  author={Marc Li{\'e}vin and Franck Luthon},
  booktitle={ICASSP},
  year={1999}
}
An unsupervised algorithm for speaker’s lip segmentation is presented in this paper. A color video sequence of speaker’s face is acquired, under natural lighting conditions and without any particular make-up. First, a logarithmic color transform is performed from RGB to HI (hue, intensity) color space and sequence dependant parameters are evaluated. Second, a statistical approach using Markov random field modeling segment mouth shape using red hue predominant region and motion in a… CONTINUE READING
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