数字线划图 (DLG)是与现有规划基本一致的各地图要素的矢量数据集，且

Digital line drawing (DLG) is a vector data set of map elements that is basically consistent with the existing plan, and saves the spatial relationship between each element and related attribute information. Traditional surveying and mapping operation data is used as the basis for DLG production, and there are product errors Larger, product quality can not be guaranteed shortcomings. <br>The rapid development of UAV tilt photography technology provides a new method for the rapid acquisition of digital line drawing. Research on the rapid acquisition method of digital line drawing has always been a hot topic of exploration and experiment. In this paper, based on the production of real three-dimensional model of drone photography technology, DLG product production research is carried out, and a two-dimensional and three-dimensional integrated measurement is implemented. The software EPS generates a digital orthophoto and a real 3D model of Context Capture to quickly generate a DLG product. It details the entire production process of using this method to produce a 1: 500 large-scale digital line drawing, and studies the rapid acquisition of DLG elements , Propose solutions to the problem of element collection. Then, using the image data, the accuracy of the digital line drawing of the UAV aerial survey is specifically studied and analyzed, which proves the feasibility of this model to produce a large-scale topographic map. Provide a valuable reference in practice.

数字线划图 (DLG)是与现有规划基本一致的各地图要素的矢量数据集，且保存各要素间的空间关系和相关的属性信息，传统测绘作业数据作为DLG生产的基础，存在产品误差较大，产品质量得不到保证的缺点。<br>无人机倾斜摄影技术快速发展，为数字线划图快速获取提供了新的方法。针对数字线划图的快速获取方法的研究一直以来都是探索和试验的热点课题,本文基于无人机摄影技术生产实景三维模型进行DLG产品制作研究，实施了一种采用二三维联动一体化测量软件EPS对Context Capture 生成数字正射影像和实景三维模型快速生成DLG产品的方法，详细阐述了利用该方法制作1:500大比例尺数字线划图整个生产流程，并研究了DLG的要素快速采集方法，针对要素采集问题提出解决方案。然后利用影像数据，具体研究并分析了无人机航测数字线划图能达到的精度，证明了该模式制作大比例尺地形图的可行性，为无人机裸眼三维测图系统在大比例尺测图实践中提供了有价值的参考。

Digital line mapping (DLG) is a vector data set of all map elements that is basically consistent with the existing planning, and it also saves the spatial relationship and related attribute information among the elements. As the basis of DLG production, traditional mapping operation data has the disadvantages of large product error and product quality can not be guaranteed.<br>The rapid development of UAV tilt photography technology provides a new method for fast acquisition of digital line drawing. The research on fast acquisition method of digital line drawing has always been a hot topic of exploration and experiment, Based on the real 3D model of UAV photographing technology, this paper studies the production of DLG products, and implements a two-dimensional and three-dimensional integrated measurement software EPS for context capture The method of generating Digital Orthophoto Image and real 3D model to quickly generate DLG products is described. The whole production process of making 1:500 large scale digital line drawing by using this method is described in detail. The method of rapid acquisition of DLG elements is studied, and the solution to the problem of element acquisition is put forward. Then using the image data, the accuracy of UAV aerial digital line mapping is studied and analyzed in detail, which proves the feasibility of making large-scale topographic map with this mode, and provides valuable reference for UAV naked eye 3D mapping system in large-scale mapping practice.<br>