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- Title
Follow-Up of the Lips for a Labial Reading.
- Authors
Hamidatou, Mohamed Lamine; Guerti, Mhania; Ait-Aoudia, Samy
- Abstract
The purpose of this research work targets the automatic extraction in real-time, of labial contours of a video sequence, without constraints of lighting or make-up for the development of one assistance system to the labial reading. Our study contains two essential steps: semi-automatic initialization for the extraction of the lips external contour of the first image of a sequence, and the follow-up of the lips movements. For that, we based ourselves on algorithms of the characteristic points determination of the lips, as well as a method of optimal slope allowing to trace the cubic ones forming the lips initial contours. For the follow-up of the characteristic points, we adapted a method of mapping. The minimization of the errors of follow-up is made by an algorithm of retiming in order to follow suitably the lips contours. Finally to make sure of the performance of our algorithms; we tested them on a variety of speakers. The results obtained showed the rigor of our algorithms.
- Subjects
LABIALITY (Phonetics); LONGITUDINAL method; DATA extraction; ALGORITHMS; PERFORMANCE; ERROR analysis in mathematics
- Publication
International Review on Computers & Software, 2012, Vol 7, Issue 1, p106
- ISSN
1828-6003
- Publication type
Article