大幅面铁路线路平面图整体处理算法的研究

A Study on the Algorithm for Overall Processing of Large Size Railway Track Plan

对连续大幅面带状铁路线路光栅图进行以铁路线为中心的局部矢量化，可以保持大数据量线路平面图的整体一致性，并可实现图形的快速定位及检索。论述了实现上述过程的基本算法。

When the trace of railway tracks on a large size raster image of railway track plan is vectorized, valuable features emerge including sustained globe consistece and fast map location as well as map image retrieving. In this paper, the basic algorithm for achieving the above objectives is discussed.