elliptical ring template 椭圆环模板
Instead of traditional rectangles, a standard elliptical template was designed to get face area of input images.
它利用一个标准的椭圆模板，代替传统的矩形模板以截取主要的人脸区域。
This paper presents an algorithm for facial tracking and pose estimation based on skin color model and elliptical template.
文章提出了一种基于肤色模型，结合椭圆环模板进行人脸跟踪及姿态估计的算法。
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