提出采用过点作圆法进行线段分割来建立空间列表曲线的数学模型的方法，并给出了软件实现方法。
This paper proposes a method to build the mathematical model of special curve with circling pass point and line partition. The software scheme is also developed in this paper.
然后把具有相同特征的像素分割成线段对象与块对象，以这些对象为最基本的分类单元；
Then they are partitioned into image objects which are basic cells to classify map features, not single pixels.
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.
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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