摘要
海底的地形地貌是海洋地质调查的重要部分。自动提取CAD海图中数字分离式标注水深操作相对复杂,往往需要自编程序处理。本文基于ArcGIS平台,提供了一种自动提取数字分离式标注水深的简便方法,并给出了实例操作。本方法能有效提取CAD海图中数字分离标注式水深,无需自编程序,具有操作简单、提取准确、自动化程度高的特点。提取成果能直接应用于GIS平台进行三维和空间分析,具有重要的应用意义。
Sea floor terrains and landforms are one of the most important parts of marine geological survey. It is difficult to extract separate water depth labels from CAD automatically and usually need to write program to process. Based on ArcGIS, a short - cut method to automatically extract these labels form CAD was brought out in this paper, and an example was presented. This method can extract separate water depth labels in CAD effectively without programming with the characteristics of easy operation, accurate extraction and high degree of automation. The extraetion result can be direetly used in 3D and spatial analyst on GIS platform which has important application significance.
基金
上海市科委重大项目(072112020)
