一种复杂场重分类的等深线化简方法  

A method for simplifying contours based on complex field reclassification

作　　者：唐露露 张立华[1] 魏帅 董箭[1] 贾帅东[1] 魏泓丞 TANG Lulu;ZHANG Lihua;WEI Shuai;DONG Jian;JIA Shuaidong;WEI Hongcheng(Department of Military Oceanography and Hydrography and Cartography,Dalian Naval Academy,Dalian,Liaoning 116018,China;China Coast Guard,Beijing 100097,China;Troops 91937 of the PLA,Zhoushan,Zhejiang 316002,China)

机构地区：[1]海军大连舰艇学院军事海洋与测绘系,辽宁大连116018 [2]中国海警局,北京100097 [3]中国人民解放军91937部队,浙江舟山316002

出　　处：《测绘科学》2024年第6期180-187,共8页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41871369,42071439)。

摘　　要：针对现有自动综合方法等深线综合阈值均为固定经验值,较少顾及线要素在各区域的差异性这一现状,该文以线要素复杂度模型为基础,设计了复杂场模型重分类处理方法,并根据划分结果,分别设置不同化简尺度,从而实现了多重阈值的等深线自动化简。实验结果表明:所提方法可实现化简尺度的“随变”处理,且整体化简效果优于原化简方法。在航海图制图综合过程中,可利用该方法实现等深线的自动化简,提升航海图生产效率及等深线化简质量。The existing automatic generalization methods have fixed thresholds for depth contours, and less considering the differences of line in different regions. Based on the complex field model of line elements, a reclassification processing method for complex field model was designed in this paper, and different simplification scales were set according to the partitioning results, thus achieving automatic simplification of multiple thresholds for contour lines. Experimental results showed that the proposed method could effectively realize the scale of “time-varying”,and the overall results was better than the original generalization methods. In the process of nautical chart generalization, this method could be used to achieve automated simplification of contour lines, improve the efficiency of nautical chart production and the quality of contour simplification.

关 键 词：制图综合 等深线化简 综合阈值 复杂度 重分类 

分 类 号：P282.1[天文地球—地图制图学与地理信息工程]