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。

Instead of traditional rectangles, a standard elliptical template was designed to get face area of input images.

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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。

This paper presents an algorithm for facial tracking and pose estimation based on skin color model and elliptical template.

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给出一种结合梯度矢量流(GVF)及椭圆变形模板的椭圆提取新算法。

A new ellipse extraction algorithm based on the ellipse-special deformable templates and gradient vector flow (GVF) was proposed.

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