摘要
由于矿区特殊性,其地形图变化十分频繁,及时对变化区域或新测绘区域地形图进行修绘是一项十分重要的工作。通过对地形图计算机绘图理论的分析,开发一个矿区地形图动态自动修正系统。该系统特色之处首先是建立一个提取DXF格式地形图控制数据提取接口,并能根据提取数据和修正区域控制数据进行修正区域搜寻、开窗显示、TIN的生成、等高线追踪平滑,以及与原有地形图接边等功能;其次系统力求做到该功能模块的独立性,以能够成为数字化绘图平台或GIS系统绘图功能的补充,或为其该项功能的完善提供具体思路。最后,通过具体实例验证该系统功能的可行性和实用性。
Due to the particularity of mining area, its topographic maps change quite frequently, so it is an important work to repair the topographic maps of the changing area or the new surveyed area in time. The paper developed a dynamic-auto-restore system for topographical map of mining area through the analysis of the theory of computer drawing. One of the feature of this system is that if it has established a interface that it can pick up topographical map control data of drawing exchang file, which can also do search for repairing areas, fenestration show, TIN＇ formation, the tracing and smoothness of contour line, and joining to the primary map, etc. Another is the system should do it＇s best to gain the independence of it＇s own function module, by which the system can be the supplementary of digital mapping and the function of GIS system. An example was given to testify the effectiveness and feasibility of the system.
出处
《测绘工程》
CSCD
2008年第4期19-24,共6页
Engineering of Surveying and Mapping
