当它是曲线的时候，其弯曲的法则看起来至少是一阶至多是二阶。
When it is curved, the law of its curvature seems to be at the least of the first and at the most of the second order.
椭圆曲线或者曲线片断经常出现在各种工业应用的场景中，而椭圆检测算法则是识别现实中具有椭圆形轮廓目标的有力工具。
Elliptical curves or fragments of such curves emerged in many industrial applications, Ellipsedetection is therefore a powerful method of cuing into these specific geometric object models.
描述曲线的直线段的数目由面积法则来决定，并且待处理的曲线将被分割成相等数目的线段。
The number of the segments is determined by an area criterion, and the curves to be matched are represented by an included angle chain of the same length.
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