Abstract
Abstract. Rapid acquisition and processing method of large scale topographic map data, which relies on the Unmanned Aerial Vehicle (UAV) low-altitude aerial photogrammetry system, is studied in this paper, elaborating the main work flow. Key technologies of UAV photograph mapping is also studied, developing a rapid mapping system based on electronic plate mapping system, thus changing the traditional mapping mode and greatly improving the efficiency of the mapping. Production test and achievement precision evaluation of Digital Orth photo Map (DOM), Digital Line Graphic (DLG) and other digital production were carried out combined with the city basic topographic map update project, which provides a new techniques for large scale rapid surveying and has obvious technical advantage and good application prospect.
Highlights
1.1 General InstructionsIn recent years, with the rapid development of China's economic, the construction of intelligent city,digital city and meticulous management have gradually promoted to a new level, large scale topographic maps play an increasingly important role in many areas such as urban planning, construction, transportation, management, social and public services, and sustainable development [1,2]
Unmanned Aerial Vehicle (UAV) low-altitude remote sensing technology is a new direction in the field of remote sensing, with characteristics such as low cost, fast, flexible, and high efficiency, high resolution, and has been gradually applied to large scale topographic map aerial photography Measurement field [3,4,5]
By virtue of its own technological advantages, high-precision, high-resolution image data can be quickly and efficiently obtained, making it becoming an effective means of traditional aerial photography measurement [6,7,8]
Summary
With the rapid development of China's economic, the construction of intelligent city ,digital city and meticulous management have gradually promoted to a new level, large scale topographic maps play an increasingly important role in many areas such as urban planning, construction, transportation, management, social and public services, and sustainable development [1,2]. UAV low-altitude remote sensing technology is a new direction in the field of remote sensing, with characteristics such as low cost, fast, flexible, and high efficiency, high resolution, and has been gradually applied to large scale topographic map aerial photography Measurement field [3,4,5]. By virtue of its own technological advantages, high-precision, high-resolution image data can be quickly and efficiently obtained, making it becoming an effective means of traditional aerial photography measurement [6,7,8]. As UAV aerial system configuration is generally non-Measuring digital camera with small focal length and the image, large image distortion, it brings great difficulties for the late image stitching, empty three encryption [9,10]. We use our basic mapping platform to carry out the two development of the three-dimensional mapping software for image mapping, and the accuracy of topographic map is verified and analyzed
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