Active shape models—their training and application
Computer Vision and Image Understanding
Speechreading using probabilistic models
Computer Vision and Image Understanding - Special issue on physics-based modeling and reasoning in computer vision
IEEE Transactions on Pattern Analysis and Machine Intelligence
Extraction of Visual Features for Lipreading
IEEE Transactions on Pattern Analysis and Machine Intelligence
Image Sequence Analysis Using A Spatio-Temporal Coding For Automatic Lip-reading
ICIAP '99 Proceedings of the 10th International Conference on Image Analysis and Processing
ICIAP '01 Proceedings of the 11th International Conference on Image Analysis and Processing
A Three-Dimensional Model of Human Lip Motions Trained from Video
NAM '97 Proceedings of the 1997 IEEE Workshop on Motion of Non-Rigid and Articulated Objects (NAM '97)
Automatic lipreading to enhance speech recognition (speech reading)
Automatic lipreading to enhance speech recognition (speech reading)
3D Modeling and Tracking of Human Lip Motions
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
Adaptive color quantization based on perceptive edge protection
Pattern Recognition Letters
Lipreading method using color extraction method and eigenspace technique
Systems and Computers in Japan
Cast shadow detection in video segmentation
Pattern Recognition Letters
A new lip feature representation method for video-based bimodal authentication
MMUI '05 Proceedings of the 2005 NICTA-HCSNet Multimodal User Interaction Workshop - Volume 57
Colour and Geometric based Model for Lip Localisation: Application for Lip-reading System
ICIAP '07 Proceedings of the 14th International Conference on Image Analysis and Processing
Audio-visual speech modeling for continuous speech recognition
IEEE Transactions on Multimedia
Segmentation of color lip images by spatial fuzzy clustering
IEEE Transactions on Fuzzy Systems
Insignificant shadow detection for video segmentation
IEEE Transactions on Circuits and Systems for Video Technology
A local region based approach to lip tracking
Pattern Recognition
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Lip-reading has potential attractive applications in information security, speech recognition, secret communication and so forth. To build an automatic lip-reading system, one key issue is how to locate the lip region, particularly under the changing illumination condition. Empirical studies have shown that the recognition rate of a lip-reading system greatly relies on the accuracy of the lip localization. Unfortunately, to the best of our knowledge, lip localization under face illumination with shadow consideration has not been well solved yet. Moreover, this problem is also one of the major obstacles to keeping an automatic lip-reading system from the practical applications. This paper therefore concentrates on this problem and proposes a new approach to obtain the minimum enclosing rectangle surround of a mouth automatically based upon the transformed gray-level image. In this approach, a pre-processing is firstly made to reduce the interference caused by shadow and enhance the boundary region of lip, through which the left and right mouth corners are estimated. Then, by building a binary sequence based on the gray-level values along with the vertical midline of mouth, the top and bottom crucial points can be estimated. Experiments show the promising result of the proposed approach in comparison with the existing methods.