稀疏海岛制图综合原则和方法研究  

Research on principle and method of sparse islands cartography generalization

作　　者：柳林[1,2,3] 李万武[1] 仇海亮[1] 

机构地区：[1]山东科技大学测绘科学与工程学院,山东青岛266510 [2]武汉大学,武汉430079 [3]海岛(礁)测绘技术国家测绘局重点实验室,山东青岛266510

出　　处：《测绘科学》2012年第4期117-119,共3页Science of Surveying and Mapping

基　　金：地理空间信息国家测绘局重点实验室开放基金(200910);海岛(礁)测绘技术国家测绘局重点实验室资助项目(2010B13);山东省"泰山学者"建设工程专项经费资助;国家863海岛礁专项(2009AA121405-4)

摘　　要：本文探讨了面向数据库的制图综合概念和内涵,针对海域和海岛面积相差很大的情况,提出稀疏海岛变尺度制图综合原则,并给出利用面积比求解海域综合尺度的方法;研究兼顾海岛属性的海岛定量选取原则,建立了带约束条件的凸壳制图综合方法,在保证海岛基本轮廓前提下兼顾凹点细节的识别,在此基础上总结出稀疏海岛制图综合算法模型。实验结果表明此方法的有效性。The paper discussed the concepts of database-oriented cartography generalization.To address the issue of large area differences between waters and islands,it proposed variable metric generalization principle of sparse islands,so that it could outstandingly present the islands and their distribution in particular view.And it derived a formula of variable scale using area ratio as a parameter.It studied the quantitative selection principle of islands taking its property into account.It built generalization method based on convex hull with constraints,which keeps the basic outline of the islands and identifies details of the pits.On this basis,it summed up cartography generalization model of the sparse islands.Experimental results showed that this method was effective.

关 键 词：海岛专题制图 制图综合 综合原则 变尺度综合 凸壳方法 

分 类 号：P282[天文地球—地图制图学与地理信息工程]