Surface settlement observation method based on tilt photography measurement of drone

Abstract

The present invention discloses a surface settlement observation method based on tilt imaging measurement of a drone, to adapt to requirements of surface subsidence monitoring. The method includes thefollowing steps: route planning, layout and measurement of image control points, obtaining of oblique images, establishment of a three-dimensional model of a real view of a measurement area, data collection and making a data difference for subsidence monitoring. In the present invention, an oblique photogrammetry technology is used to obtain images of a collapsed surface in various angles, a real-view three-dimensional model and an orthophoto image of the subsidence zone with spatial information are established by using aerial triangulation measurement and measurement of the image control points, the real-view three-dimensional model is used to collect data of ground points, and a difference is made for the data of the ground points at a same position at different times to obtain a subsidence value for subsidence monitoring. The method is easy to operate, and compared with the traditional subsidence monitoring method, the method has a wide monitoring range and high operation efficiency, and can obtain a more comprehensive monitoring result.

Description

technical field [0001] The invention relates to the technical field of geographic surveying and mapping, in particular to a settlement observation method. Background technique [0002] With the development and maturity of UAV aerial survey and mapping technology, the traditional low-efficiency manual mapping operation method has been gradually replaced. The emergence of UAV photogrammetry technology has greatly improved the measurement accuracy under the premise of ensuring the measurement accuracy. efficiency and safety. Compared with traditional photogrammetry, the accuracy of oblique photogrammetry is greatly improved, and the generated real-world 3D model can intuitively display the actual situation of the measurement area. [0003] The traditional subsidence observation method is to manually lay out the observation line on the main section of the surface mobile basin, and then conduct traditional measurement on the observation line regularly, and process the observatio...

AI Technical Summary

Problems solved by technology

This method is quite mature, but its efficiency and safety cannot be guaranteed, and at the same time, it cannot monitor the overall subsidence of the ground surface

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