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A 3D image acquisition method based on small UAV video in engineering geological survey

A small unmanned aerial vehicle and three-dimensional imaging technology, which is applied in image communication, target-finding control, and color TV parts, etc. It can solve the problem of difficulty in ensuring 70% coincidence of adjacent photos, reduce the success rate of three-dimensional images, and reduce the size of photos. Inhomogeneity and other problems can be achieved to reduce the difficulty of splicing, improve the success rate, and achieve the effect of consistent effective frames

Active Publication Date: 2018-04-27
长江三峡勘测研究院有限公司(武汉)
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Problems solved by technology

Traditional methods face problems such as difficulty in ensuring 70% coincidence of adjacent photos and uneven photo frames in field operations (such as figure 1 ), thus reducing the success rate of 3D image synthesis, resulting in the difficulty of on-site aerial photography and the low efficiency of obtaining 3D images

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  • A 3D image acquisition method based on small UAV video in engineering geological survey
  • A 3D image acquisition method based on small UAV video in engineering geological survey
  • A 3D image acquisition method based on small UAV video in engineering geological survey

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Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples.

[0039] The dam slope of a water conservancy and hydropower project in southwest China has a height difference of 270m, and the single pre-splitting excavation height of the slope is 5m. The engineering geology is recorded using 3D image visualization. Taking the slope section of the dam abutment project with pile number 0-40~0-95 and elevation 878m~872m as an example, the description is as follows.

[0040] Such as figure 2 Shown, Step 1: Homework Preparation

[0041] (1) Preparation of special equipment: ① One set of drone and high-definition pan-tilt camera (1 / 2.3-inch CMOS image sensor, 12.4 million effective pixels, such as DJI Phantom 3 Professional), ② Prism-free total station (such as Topcon ( GPT-3005LN) 1 set, measuring accuracy ±(10mm+10ppm), ③One 50m tape meas...

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Abstract

The invention discloses a method for quickly acquiring three-dimensional images based on video recordings of small UAVs. The method mainly uses the high-definition camera attached to the UAVs to record the target area during the flight, and then sets Extract pictures at fixed time intervals to ensure the overlap between pictures, and use Smart3D software to synthesize the extracted picture files to obtain a 3D image of the target area. Compared with the traditional method of synthesizing three-dimensional images by taking photos, the invention has a higher success rate, and avoids the problem of re-taking aerial photography due to the failure of three-dimensional image synthesis in the traditional method.

Description

technical field [0001] The invention relates to the technical field of engineering geological survey, in particular to a three-dimensional image acquisition method based on video recording of a small unmanned aerial vehicle in engineering geological survey. Background technique [0002] With the rapid development of small UAV technology, it is more and more widely used in the civilian field. UAVs have the characteristics of low cost, no risk of casualties, over-the-horizon flight, simple control, and high work efficiency. They are currently widely used in engineering construction, especially in engineering geological surveys, providing important technical support. [0003] As the development and construction of Southwest my country enters a peak period, in the vast alpine and valley areas of Southwest China, engineering construction is faced with a large number of high slope problems with complex geological conditions. High slope problems not only make engineering constructi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N13/261G05D1/12H04N5/232
CPCG05D1/12H04N23/69
Inventor 王吉亮张熊杨静陈又华黄孝泉白伟周质荣宋涛曾立刘冲平郝喜明施炎
Owner 长江三峡勘测研究院有限公司(武汉)
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