Real-Time Lip Contour Extraction and Tracking Using an Improved Active Contour Model

Authors:
Jingying Chen;Bernard Tiddeman;Gang Zhao
Affiliations:
Engineering and Research Centre for Information Technology on Education, Huazhong Normal University, Wuhan, P.R. China and School of Computer Science, University of St Andrews, UK;School of Computer Science, University of St Andrews, UK;Engineering and Research Centre for Information Technology on Education, Huazhong Normal University, Wuhan, P.R. China
Venue:
ISVC '08 Proceedings of the 4th International Symposium on Advances in Visual Computing, Part II
Year:
2008

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Abstract

We present an automatic lip contour extraction and tracking method based on an improved active contour model, which introduces a novel image gradient detection based on the segmented lip, tongue and oral cavity image obtained using a nonlinear transformation of the YCbCr color space and a novel entropy analysis based segmentation. The proposed method provides encouraging results with different mouth shapes (with the appearance of teeth, tongue and oral cavity) under various illuminations.