【摘要】 从实践经验出发 ,结合相关技术基础 ,介绍在AutoCAD下进行地形图数字化时 ,原图定向的几种方法 ,并从精度、效率等方面进行了比较 ,最后给出软件实现的数字模型更多还原

【Abstract】 Starting from the practical experience,combining with the correlative technological knowledge,this paper introduces some methods to digitize topographic maps with AutoCAD,compares the accuracy and efficiency among these methods,then gives the mathematical models for programming.更多还原