中文摘要：

提出了利用角点信息提取嘴唇特征的方法.在可变形模板的框架下,利用以前方法中没有用到的角点信息,提出了基于角点信息的能量函数.该能量函数能够更为精确地反映嘴角点和牙齿区域的特征,跟踪嘴唇的变形.实验结果表明,该方法能更鲁棒地提取嘴唇轮廓特征.

英文摘要：

A new method of incorporating corner information for mouth feature extraction is proposed. Based on deformable template, corner energy terms, which are based on the corner information that has been ignored in previous methods, is proposed for mouth feature extraction. The corner energy function can reflect the properties of mouth corners and teeth region effectively. Experimental results show the new method is robust.