基于SLD的IHO S‐52开源解决方案  

An Open Source Solution of IHO S-52 Based on SLD

作　　者：亢孟军[1,2] 吴雨锟 张开硕 苏世亮 翁敏[1] KANG Mengjun;WU Yukun;ZHANG Kaishuo;SU Shiliang;WENG Min(School of Resources and Environmental Sciences,Wuhan University,Wuhan 430079,China;Beijing Key Laboratory of Urban Spatial Information Engineering,Beijing 100038,China;Heilongjiang Institute of Geomatics Engineering,Harbin 150081.China)

机构地区：[1]武汉大学资源与环境科学学院,湖北武汉430079 [2]城市空间信息工程北京市重点实验室,北京100038 [3]黑龙江地理信息工程院,黑龙江哈尔滨150081

出　　处：《测绘地理信息》2022年第1期120-123,共4页Journal of Geomatics

基　　金：城市空间信息工程北京市重点实验室经费资助项目(20210211);国家自然科学基金(42071448)。

摘　　要：国际海道测量组织(International Hydrographic Organization,IHO)发布的S‑52显示规范定义了航行环境下电子海图的具体显示参数,但是其解析渲染需要特定软件,无法适应当前GIS软件对电子海图生产的需求。开放式地理信息系统协会(Open GIS Consortium,OGC)图层样式描述规范(styled layer descriptor,SLD)是一种开放的符号描述规则,被绝大多数GIS软件支持。构建了S‑52与OGC SLD规范间的映射关系,实现了两种符号描述规则的自动转换,重点介绍了如何使用SLD渲染S‑52中的复杂线型和复杂面状图形,为GIS软件集成S‑52提供了一种开源解决思路。实验结果证明,基于SLD的电子海图显示效果优于一些商业解决方案的显示效果。S-52 display specification published by International Hydrographic Organization(IHO)defines the specific display parameters of electronic chart in the navigation environment,but its analysis and rendering require specific software,which cannot meet the current GIS software’s demand for electronic chart production However,styled layer descriptor(SLD)of Open GIS Consortium(OGC)is an open symbol description rule and can be supported by most GIS softwares So,we construct the mapping relationship between S-52 and OGC SLD specifications to realize the automatic conversion of the two symbol description rules We focus on how to render complex linear and area shapes in S-52 using SLD,which provides an open source solution for GIS software to integrate with S-52 Experimental results prove that the display effect of electronic charts by SLD is better than that of some commercial solutions.

关 键 词：电子海图 开源符号渲染 地图符号库 图层样式描述规范(styled layer descriptor SLD) 

分 类 号：P28[天文地球—地图制图学与地理信息工程] P208[天文地球—测绘科学与技术]