参数活动轮廓模型采用点集或B -样条曲线来表示模型的轮廓线，具有运算效率高的特点。

Parametric active contours represent their contours by the point sets or B-splines, and they have the efficient performance on image segmentation.

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二值水平集活动轮廓模型既可以自动地处理轮廓线的拓扑变化，又具有较高的运算效率。

Binary level set active contours not only have the ability of automatically handling the topology change, but also have high computational efficiency.

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传统水平集活动轮廓模型具有自动处理轮廓线拓扑变化的优点。

Traditional level set active contours have the ability of automatically handling the topology change.

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传统水平集活动轮廓模型具有自动处理轮廓线拓扑变化的优点。

Traditional level set active contours have the ability of automatically handling the topology change.

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