提出了一种具有形状约束的人脸轮廓提取算法.该算法根据人脸形状近似椭圆的特征,在Snake的能量函数中加入形状能量,使控制点间的联系得到加强,以提高收敛结果的准确性.实验结果表明,提出的方法能够较好地提取复杂背景中的人脸轮廓,是一种有效的方法.
This paper presents a method for facial contour extraction based on Snake model with shape restrict.Consider character of the human facial shape is similar to a ellipse,the traditional Snake model is modified by adding the shape energy item in its energy function,which strong the relationship among the Snake points so as to improve the accuracy.Experiments show it is a effective approach for extracting facial contour in complex background.