椭圆搜索方式高程注记智能移位方法

Smart move method of elevation annotations based on oval search

针对在数字化成图中,利用已有商业成图软件进行高程点展绘常常发生高程注记压盖已有地物的情况,通常的做法是在图形编辑结束时手工移动高程注记,存在效率低下问题,该文提出了一种基于椭圆搜索方式实现高程注记智能移位以避让已有地物的算法。实验结果表明,该算法能够有效自动识别高程注记是否压盖已有地物,并进行有效避让处理,能够免除手工移点的繁琐工作;此法简单易行,能够满足实际的生产需要。

In digital mapping,when using commercial mapping software to plot the elevation points,it often occurs that elevation annotations cap other features.The usual method is to manually move the elevation notes at end of graphic editing,which is inefficient.In response to this issue,the paper presented an algorithm of achieving intelligent move to avoid elevation annotation covering feature based on oval search.Experimental result showed that the algorithm could automatically identify whether or not the elevation annotation caps other features,and effectively avoid other features,which avoids the tedious work of moving points manually.This method could meet actual production needs with simplicity.