基于活动轮廓的跟踪(Active Contour Based Tracking)：基于活动轮廓的跟踪思想是利用封闭的曲线轮廓来表达运动目标，并且该轮廓能够自动连续地更新。
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给出一种新的基于活动轮廓与光流约束的椭圆跟踪算法。
A new ellipse-tracking algorithm based on the active contour and the optical flow technique was proposed.
跟踪算法分为两步进行，首先应用均值漂移算法实现手部区域的定位，然后基于自适应活动轮廓模型提取手部轮廓。
The proposed method consists of two steps: hand location using mean shift and hand extraction based on adaptive active contour model.
提出了一种基于活动轮廓模型的胃窦B超序列图象边缘轮廓的提取与跟踪方法。
An extraction and tracking of the contour of gastric anthem in the ultrasound sequence images based on active contour models is presented in this paper.
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