大比例尺DLG自动可视化快速制图系统关键技术与实现

Key Technology and Implementation of Large Scale DLG Automatic Visualization and Rapid Mapping System

通过对大比例尺DLG数据库的可视化存在的问题分析,本文提出一种解决思路,针对其中的关键技术进行了相关研究,得到了一体化符号系统、颜色映射模式、空间叠置规则判断技术等多个关键技术成果。将这些成果应用到大比例尺DLG自动可视化快速制图系统中,成功实现对湖南省不动产基础1:2000 DLG数据库的自动可视化处理,达到了良好的制图效果,极大的提高了制图效率。

By analyzing the problems of visualization of large scale DLG database, this paper proposes a solution. This paper studied the key technologies, and obtained several key technologies, such as Integrated Symbol System, Color Mapping Pattern, and Spatial Overlay Rule Judgment. These results are applied to large scale DLG automatic visualization and rapid mapping system, and the DLG database of real estate of Hunan was successfully processed by automatic visualization. It achieves good mapping effect and greatly improves the mapping efficiency.