数据转换程序参与2006年理论计算，不仅通过计算，而且大大提高了线损理论计算工作的效率。
The data conversion program was used in the theoretical calculation in 2006. It not only has accurate results, but also greatly increases the computation efficiency.
该方法还可用于公路规划设计中将地图中的等高线、边界线等转换为数据文件，便于使用计算机辅助计算、规划。
This method can be used in road design to changed the contour lines and sidelines to the data files in order to use computer aided calculating and planing.
采用多边形拟合物体图象边缘轮廓线，即实现从图象到图形的转换的方法，与直接记录原图象数据相比可大大减少轮廓线上所需记录的边缘点的个数，即减少数据量。
In this paper, a method about contour extraction of regular targets in images is proposed, which is based on an improved rectangle fitting method and a polygon fitting method.
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