电子海图水深注记表示方法研究  

Research on Representation Method of Electronic Chart Depth Annotation

作　　者：吴芳华 王磊[3] 张羿祺 马超 Wu Fanghua;Wang Lei;Zhang Yiqi;Ma Chao(Slate Key Laboratory of Geo-Information Engineering,Xi'an 710054,China;Xi'an Research Institute of Surveying and Mapping,Xi'an 710054,China;Xi'an Aerospace Remote Sensing Data Technology Co.Ltd.,Xi'an 710061,China;School of Resource and Environmental Sciences,Wuhan University,Wuhan 430072,China)

机构地区：[1]地理信息工程国家重点实验室,陕西西安710054 [2]西安测绘研究所,陕西西安710054 [3]西安航天天绘数据技术有限公司,陕西西安710061 [4]武汉大学资源与环境科学学院,湖北武汉430072

出　　处：《测绘科学与工程》2018年第5期57-61,共5页Geomatics Science and Engineering

基　　金：国家973计划资助项目(613317).

摘　　要：水深注记是表达海底地形的一种重要方式,本文在分析现行海图水深注记表示方法存在不足的基础上,提出了一种基于字符颜色扩展联合图形符号的一体化水深注记表示方法。该方法既顾及了传统的海图表示原则,又拓展了注记的内涵,具有定位正确、水深值无损、直观易读、表达内容丰富等优点,可在电子海图上有效实现对不同类型、不同来源、不同质量差异的水深数据的表示,能更好地满足用户直观、准确的认知和利用海底地形信息的需求。Water depth annotation is an important method that represents the submarine topography. Based on the analysis of the shortcomings of the current representation methods of chart depth annotation, this paper proposes an integrated representation method of chart depth annotation based on the combination of character color and graphic symbols, which not only takes the traditional representation principles of chart into account, but also has the advantages such as accurate positioning, no loss of depth value and being distinct and meaningful. It can effectively represent bathymetric data of different types, sources and qualities on electronic charts and meet the needs of user for intuitive and accurate recognition and utilization of submarine topographic information.

关 键 词：数字海图 地图注记 水深注记 可视化表达 多样性 

分 类 号：P284[天文地球—地图制图学与地理信息工程]