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 of DLG production, and the operation method is common. There are shortcomings such as long working cycle, low working efficiency and high cost. <br>The rapid development of UAV tilt photography technology provides a new method for the rapid acquisition of digital line drawing. The research on the rapid acquisition method of digital line drawing has always been a hot topic of exploration and experiment. In this paper, DLG product production research is carried out on the production of real three-dimensional models of drone photography technology, using two- and three-dimensional linkage integrated measurement software EPS, Capture generates digital orthophotos and three-dimensional models of real scenes, quickly obtains digital line drawing, elaborates the entire production process of using this method to produce a 1: 500 large-scale digital line drawing, studies the rapid collection method of DLG elements, and develops digital lines The plan inspection plan ensures the quality of the digital line plan, and proposes solutions to the problem of element collection, which provides a valuable reference for the practice of large-scale mapping in the UAV naked-eye 3D mapping system.

Digital line mapping (DLG) is a vector data set with the existing planning is basically consistent with the local plot features, and savethe spatial relationship between the various features and related attribute information, the traditional mapping operation data as the basis of DLG production, the operation mode is widespread the disadvantages of long working cycle, low efficiency, large cost and so on.<br>The rapid development of drone tilt photography technology provides a new way for digital line drawing to be obtained quickly. For the study of the method of rapid acquisition of digital line drawing has always been a hot topic of exploration and experimentation, this paper makes a DLG product production study on the production of real-life 3D model of drone photography technology, uses the 2D linkage integrated measurement software EPS to generate digital orthophoto image and real-world 3D model of CaptureContext, makes rapid acquisition of digital line drawing, and elaborates the whole production process of making 1:500 scale digital line drawing using this method. The method of rapid acquisition of DLG elements is studied, the method of digital line drawing is formulated to check the quality of digital line drawing, and the solution is proposed for the problem of element acquisition, which provides a valuable reference for the three-dimensional mapping system of the drone naked eye in the practice of large scale scale mapping.

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, the traditional mapping operation data has the disadvantages of long operation cycle, low efficiency and large cost.<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, In this paper, DLG product production research is carried out on the real 3D model produced by UAV photography technology, and the context is analyzed by using the two-dimensional and three-dimensional integrated measurement software EPS Capture generates Digital Orthophoto Image and three-dimensional model of real scene for rapid acquisition of digital line drawing. The whole production process of making 1:500 large scale digital line drawing by using this method is described in detail. The rapid acquisition method of DLG elements is studied, the inspection scheme of digital line drawing is formulated, the quality of digital line drawing is guaranteed, and the solution to the element acquisition problem is proposed, which is unmanned The open eye 3D mapping system provides a valuable reference in large-scale mapping practice.