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

作　　者：蒲朝旭[1] 汤洪 林莉[3,4] 

机构地区：[1]成都理工大学地球科学学院测绘工程系,成都610059 [2]凉山州多维数字城市测绘有限公司,四川凉山615050 [3]外生成矿与矿山环境重庆市重点实验室(重庆地质矿产研究院),重庆400042 [4]煤炭资源与安全开采国家重点实验室重庆研究中心,重庆400042

出　　处：《测绘科学》2015年第3期141-145,共5页Science of Surveying and Mapping

摘　　要：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.

关 键 词：AUTOCAD 高程注记 智能移位 消隐 椭圆搜索 

分 类 号：P283[天文地球—地图制图学与地理信息工程]