Dynamic Lip Identification Algorithm Based on Automatic Calibration of Feature Points

摘要

In order to avoid the defect of lip identification about one single picture and enhance the accuracy of the recognition, this paper applies the dynamic lip identification and puts forward the method to calibrate the feature points inner and outer of lips at the same time. Meanwhile, this paper introduces the algorithm of calibration of feature points and improves it on the basis of the algorithms. The improved algorithm not only reduces the computational complexity of the calibration, but also increase the accuracy of the calibration. In matching and recognition stage, the classifier of this paper is HMM. Experiments show that the algorithm reduces the computational complexity. Meanwhile, it enhances the accuracy of the recognition.