图纸扫描误差分析及变形误差纠正

The Error Analysis of the Map Scanning and the Error Correcting of Transfiguration

目前,地图的扫描数字化已成为G IS领域中获取数据信息的主要手段之一;从图纸的扫描数字化过程中的误差来源研究入手,分析了地图扫描数字化各项误差对成果质量的影响特征及其大小;就图幅变形误差和应采取的纠正方法进行了试验研究,得出的结论已在土地利用数据库建设等项目的实施过程中得到应用,取得了很好的效果。

Currently, the map scan digital has become one of the main means which are used to obtain a data information in the GIS realm. This paper starts with the research of the error margin source in the process of diagram paper scan, and analyzes various error margins＇influence on quality characteristic and its size map of digital scan. For the diagram transformation by carrying on experiment to research, error margin should be adopted; the conclusion has already been applied in the database construction of land using, etc. and has obtained good results.