摘要
针对矿山生态修复治理区大比例尺测图的需求,探讨了利用CASS 3D将倾斜模型转化为大比例尺地形图的方法。首先确定模型中治理区的范围边界,提取范围内适当密度的地表高程数据;然后基于高程数据制作DTM模型,对照倾斜模型完善其他地形图要素;最后通过与实测高程数据进行精度对比分析,获取实验结果。结果表明,该方法不但能满足治理区1∶500比例尺测图的精度要求,而且提高了传统制图方法的制图效率。
Aiming at the large scale mapping demand of mine ecological restoration and management area,we discussed a method of transforming oblique model into large scale topographic map by CASS 3D.Firstly,we determined the governance area boundary in the model,and extracted the surface elevation data with appropriate density within the range.Then,we used the elevation data to make DTM model,and according to oblique model,supplemented the other topographic map elements.Finally,we obtained the experimental results by comparing the accuracy with the measured elevation data.The result shows that this method can not only meet the accuracy requirements of 1∶500 scale mapping in the governance area,but also improve the mapping efficiency compared with the traditional mapping method.
作者
李行
陈朵
LI Hang;CHEN Duo(The Fourth Geological Exploration Institute of Henan Geology and Mineral Bureau,Zhengzhou 450000,China)
出处
《地理空间信息》
2022年第7期138-141,共4页
Geospatial Information
基金
南太行地区山水林田湖草(鹤壁淇县)生态保护修复项目。
