蛇模型在等深线自动化简中的应用  

Application of Snake Model in Auto Simplification of a Depth-contour

作　　者：温连发 张立华[1,2] 贾帅东[1,2] 

机构地区：[1]海军大连舰艇学院海洋测绘系,辽宁大连116018 [2]海军大连舰艇学院海洋测绘工程军队重点实验室,辽宁大连116018

出　　处：《海洋测绘》2016年第5期15-18,共4页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41471380;41171349)

摘　　要：针对当前等深线的化简主要依靠经验和手工方法实施,其自动化简仍未取得实质性突破的现状。从等深线化简的安全性约束出发,阐释了蛇模型的基本内涵,分析和计算了蛇模型曲线所受的力,明确了蛇模型点的安全约束方法,推导了蛇模型的能量公式,并实现了基于蛇模型的等深线自动化简。试验结果表明,采用该算法化简后的等深线能够很好地遵守安全性约束准则;蛇模型算法可以用来实现等深线的自动化简。To address the limitation of simplification of a depth-contour in chart generation of which mainly depends on experience and manual method and a material breakthrough of auto simplification is not made, respectively for the safety constraint of simplification of a depth-contour,the fundamental connotation of snake model is explained,and the force applied on snake model is analyzed.Correspondingly,the method that makes the point of snake model observe the safety constraint is explicated,and the energy formula of snake model is concluded.Finally,auto simplification of a depth-contour based on snake model is realized.The result shows that a depth-contour which is simplified by snake model can observe the safety constraint well; snake model can be used to simplify a depth-contour.

关 键 词：制图综合 等深线 蛇模型 自动化简 安全性约束 

分 类 号：P283.1[天文地球—地图制图学与地理信息工程]