水深测量资料边界智能化提取关键技术研究  

The Key Technology Research on Intelligentizedly Extracting Sounding Data Borderline

作　　者：贾俊涛[1] 谭冀川[2] 孔海英[3] 孟婵媛[1] 孙昊[2] 李明辉[2] 

机构地区：[1]海军海洋测绘研究所,天津300061 [2]海军出版社,天津300450 [3]海军海洋水文气象中心,北京100161

出　　处：《海洋测绘》2012年第2期55-57,共3页Hydrographic Surveying and Charting

摘　　要：首先构建离散水深的Delaunay三角网,快速进行Delaunay三角网中点、边、三角形之间拓扑关系的存储。然后计算相邻离散点的平均距离,使其作为水深边界提取的距离阈值。最后遍历Delaunay三角网,利用边与三角形的拓扑存储结果和距离阈值,提取出离散水深边界。实验证明,该方法具有结构简单、操作便利、内存占用少、计算效率高等特点,能够实现离散水深边界的快速智能化提取。Firstly,the Delaunay triangle nets of scattering soungdings are built and the topologic relation of points,edges and triangles are saved.Secondly,the average distance of close points is used as limited distance for the borderline of soundings.Finally,the results of topologic relation and the limited distance are applied for extracting the soundings＇borderline.By the experiment,the method is provided with the characteristics of simple structure,convenient operating,low-occupied memory and high efficiency,which turns the borderline＇s quickly extracting from scattering soundings into reality.

关 键 词：离散水深 边界提取 拓扑关系 海图编制 

分 类 号：P208.2[天文地球—地图制图学与地理信息工程]