Dynamic adjustment method for improving complex slope rock mass unmanned aerial vehicle investigation precision
A technology of dynamic adjustment and unmanned aerial vehicles, which is applied in the direction of radio wave measurement system, satellite radio beacon positioning system, instruments, etc., can solve the problem of inaccurate topographic information, achieve high accuracy, wide application prospects, and realize automatic acquisition Effect
Pending Publication Date: 2022-05-06
浙江公路水运工程咨询有限责任公司
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Problems solved by technology
[0005] However, for complex slope rock masses, it is not accurate enough to obtain terrain information only through the first UAV planar photogrammetry, and complex slopes may also produce large angle changes in a small range. It is judged that the corresponding route file cannot be generated well
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[0052] The invention is described in further detail with reference to the accompanying drawings and specific embodiments.
[0053] as Figure 1-6 As shown in, the dynamic adjustment method of the invention for improving the investigation accuracy of UAV for complex slope rock mass comprises the following steps:
[0054] Step 1: first, use the conventional UAV photogrammetry method to take the first rough UAV photographing of the scene to be measured, so as to obtain the low-precision DEM data.
[0055] Step 2: Based on the scene DEM data, set the UAV route close to the scene at a certain height h, where h = 5 ~ 50m.
[0056] Step 3: set three laser ranging devices with the lens as the center, further calculate the distance value calculated by the laser ranging, obtain the deviation angle between the lens angle and the "front view" angle, and adjust the yaw angle and pitch angle of the UAV to the "front view" angle.
[0057] Step 4: repeat the above operations for the whole scene to...
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The invention provides a dynamic adjustment method and device for improving complex slope rock mass unmanned aerial vehicle survey precision, and the method comprises the following steps: 1, selecting an unmanned aerial vehicle with an RTK function for photogrammetry, and obtaining low-precision DEM data; 2, on the basis of the DEM data obtained in the step 1, setting an unmanned aerial vehicle route close to the scene to be measured at the height h away from the scene to be measured; 3, setting a laser ranging device, obtaining geometric information of the scene to be measured, adjusting the orientation of a lens to be vertical to the area to be measured, and then taking a picture; and 4, repeating the operation in the route of the unmanned aerial vehicle to obtain all aerial photos of the to-be-detected area. According to the dynamic adjustment method and device for improving the complex slope rock mass unmanned aerial vehicle investigation precision, the attitude and lens orientation of the unmanned aerial vehicle are automatically adjusted according to the to-be-measured area, it is guaranteed that the lens orientation of the unmanned aerial vehicle is always perpendicular to the to-be-measured area, the lens of the unmanned aerial vehicle is parallel to the normal vector of the measurement scene, and no-deviation-angle shooting is achieved; and the precision of three-dimensional modeling is improved.
Description
technical field [0001] The invention relates to the technical field of automatic adjustment of UAV camera lens, in particular to a dynamic adjustment method and device for improving the investigation accuracy of UAV for complex slope rock mass. Background technology [0002] In the traditional geological survey, due to the large amount of manual labor; It is difficult to ensure safety; Sampling has great limitations. The accuracy of the survey results depends on the selected rock mass area and geological expertise, which is highly subjective. Therefore, digital geological survey, especially UAV photogrammetry technology, has the advantages of low cost, simple operation, safety and reliability, and has developed rapidly. [0003] In order to further obtain the ultra-high resolution image of close range objects, the aerial photography method of UAV has also been improved. In recent years, a UAV aerial photogrammetry method close to photogrammetry has been proposed and applied. It u...
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Login to View More IPC IPC(8): G01S19/43G01S19/48G01C11/02
CPCG01S19/43G01S19/485G01C11/02
Inventor 刘健吕庆蔡学桁毛新莹郑俊
Owner 浙江公路水运工程咨询有限责任公司