Lip Features Automatic Extraction

An algorithm for speaker's lip segmentation and features extraction 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. Second, a statistical approach using markov random eld modelling determines lip prevailing region and motion in a spatiotemporal neighbourhood. Third, the nal label eld is used to extract ROI (Region Of Interest) and geometrical features.

• Type: Conference
• Year: 1998
• Where: ICIP
• Authors: Franck Luthon, Marc Liévin
• Keywords: Eld Modelling Determines, ICIP 1998, Image Processing, Logarithmic Color Transform, Nal Label Eld