Image Based Techniques for Lip Segmentation – A Review
نویسنده
چکیده
The lips and mouth region are the main visual parts of the human speech system; these parts hold the most visual speech information. A few techniques have been recommended to perceive lip tracking with the focus on segmentation of lip regions or extraction of lip contours. Commonly used approaches for lip tracking are Image-based methods. In the Image based methods a set of characteristic points are identified with the help of spatial cues such as color and edges. These types of methods are quite sensitive and ambiguous to the initial position of feature points. This paper reviews the various components of Image based techniques used in lip tracking.
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