并利用改进的垂直平面扫描算法生成由约束图模型定义的约束图。
And the constraint-graph-model-de-fined constraint graph is generated by using improved vertical plane scanning algorithm.
首次将扫描线算法用于平面和空间等值线图和彩色云图的显示。
And scanning line algorithm is used for the first time in displaying the plane and space isogram and nephogram.
通过对多边形可见边的分析，利用平面扫描技术，给出了求其可见边的算法。
By analysing of the visibility edges of the polygons, using the plane sweep technique, we present an algorithm to find the visibility edges of the set of polygons.
拓展了我们已有的平面上单调链求交的扫描线算法，将其应用到初步等距线中的全局自交点和全局无效环的确定上。
The algorithm proposed by us for polygonal chains intersection based on the sweep line algorithm is extended, and it is used to detect and delete global self-intersections in the rough offset curve.
利用本文算法得到的提取结果更加准确，扫描点的分割归属更加合理，为后续的拟合平面提取计算提供了更加可靠的基础数据。
The algorithm is both efficient and roboust. More rational segmentation result can be obtained using the presented algorithm. (3) Fitted plane extraction using segmentation primitives from scan lines.
利用本文算法得到的提取结果更加准确，扫描点的分割归属更加合理，为后续的拟合平面提取计算提供了更加可靠的基础数据。
The algorithm is both efficient and roboust. More rational segmentation result can be obtained using the presented algorithm. (3) Fitted plane extraction using segmentation primitives from scan lines.
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