Fundamentals of speech recognition
Fundamentals of speech recognition
A Tutorial on Support Vector Machines for Pattern Recognition
Data Mining and Knowledge Discovery
An Approach to Statistical Lip Modelling for Speaker Identification via Chromatic Feature Extraction
ICPR '98 Proceedings of the 14th International Conference on Pattern Recognition-Volume 1 - Volume 1
Robust Real-Time Face Detection
International Journal of Computer Vision
Motion Features from Lip Movement for Person Authentication
ICPR '06 Proceedings of the 18th International Conference on Pattern Recognition - Volume 03
Biometric Identification Using Motion History Images of a Speaker's Lip Movements
IMVIP '08 Proceedings of the 2008 International Machine Vision and Image Processing Conference
Lip Contour Extraction Based on Manifold
MMIT '08 Proceedings of the 2008 International Conference on MultiMedia and Information Technology
Class-Specific Kernel-Discriminant Analysis for Face Verification
IEEE Transactions on Information Forensics and Security - Part 2
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In this paper we present a biometric approach, based on lip shape. We have performed an image preprocessing, in order to detect the face of a person image. After this, we have enhanced the lips image using a color transformation, and next we do its detection. The parameterization is based on lips contour points. Those points have been transformed by a Hidden Markov Model (HMM) kernel, using a minimization of Fisher Score. Finally, a one-versus-all multiclass supervised approach based on Support Vector Machines (SVM) is applied as a classifier. A database with 50 users and 10 samples per class has been built. A cross-validation strategy have been applied in our experiments, reaching success rates up to 99.6%, using four lip training samples per class, and evaluating with six lip test samples. This success was found using a shape of 150 points, with 40 states in Hidden Markov Model and a RBF kernel for a supervised approach based on Support Vector Machines.