Tree detection method employing unmanned aerial vehicle for shooting

A detection method and technology of unmanned aerial vehicle, applied in the direction of measurement device, optical device, instrument, etc., can solve the problems of endangering the personal safety of staff, inaccurate measurement data, influence of the use of infrared rangefinder, etc., and achieve the improvement of terrain restrictions. , the effect of reducing security risks

Inactive Publication Date: 2020-06-26
GUANGDONG SENLIN GREENING CO LTD
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AI Technical Summary

Problems solved by technology

However, in the wild environment, trees sometimes grow on terrain that is difficult for personnel to reach, which brings inconvenience to the research work and even endangers the personal safety of the staff
In addition, the uneven terrain of the environment will also affect the use of infrared rangefinders and other instruments, resulting in inaccurate measurement data and other problems

Method used

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  • Tree detection method employing unmanned aerial vehicle for shooting

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Effect test

Embodiment 1

[0025] see figure 1 As shown, in the present embodiment, the tree detection method that applies unmanned aerial vehicle photographing, comprises the following steps:

[0026] a. Use the drone to fly to the periphery of the target tree.

[0027] b. Keep the current altitude of the drone at h n , while measuring the straight-line distance a between the UAV and the tree top of the target tree using infrared ranging equipment n And record the elevation angle θ between the UAV and the top of the target tree n , in this embodiment, the angle of the infrared range-finding device of the UAV is adjustable and its adjustment angle can be controlled by remote control so that the infrared range-finding device can aim at the treetop of the target tree, and the adjustment angle of the infrared range-finding device can be recorded at the same time Obtain the elevation angle θ n value.

[0028] c. Take a photo of the target tree to obtain the original image.

[0029] d. Move the positio...

Embodiment 2

[0038] see figure 1 As shown, in the present embodiment, the tree detection method that applies unmanned aerial vehicle photographing, comprises the following steps:

[0039] a. Use the drone to fly to the periphery of the target tree.

[0040] b. Keep the current altitude of the drone at h n , in this example h n It is equal to the breast height of the target tree (that is, 1.3m), and at the same time, use infrared ranging equipment to measure the straight-line distance between the UAV and the top of the target tree a n , the current horizontal distance b between the UAV and the target tree n And record the elevation angle θ between the UAV and the top of the target tree n . In this embodiment, the angle of the infrared range-finding device of the drone is adjustable, and its adjustment angle can be remotely controlled so that the infrared range-finding device can aim at the top of the target tree, and at the same time, the adjustment angle of the infrared range-finding ...

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Abstract

The invention discloses a tree detection method employing an unmanned aerial vehicle for shooting. The method comprises the following steps: a, enabling the unmanned aerial vehicle to fly to the periphery of a target tree; b, keeping the current ground clearance of the unmanned aerial vehicle at hn, measuring the linear distance an between the unmanned aerial vehicle and the tree top of the targettree by using infrared distance measuring equipment, and recording the elevation angle theta n between the unmanned aerial vehicle and the tree top of the target tree; c, photographing the target tree to obtain an original image; d, moving the position of the unmanned aerial vehicle and repeating the step b and the step c to perform multi-site measurement until the unmanned aerial vehicle completes full-view shooting of the target tree; e, calculating the height H of the target tree; f, calculating the diameter at breast height D of the target tree according to the height H obtained in the step e.

Description

technical field [0001] The invention relates to the technical field of plant detection, in particular to a tree detection method using drone photography. Background technique [0002] In carrying out forestry management work, it is necessary to carry out relevant detection and investigation on the trees in the area. Generally, it is necessary to measure and calculate parameters such as the height, diameter at breast height and crown width of the trees. The prior art usually requires staff to go to the scene to use infrared range finders and other measuring equipment to carry out on-the-spot detection of trees. However, in the wild environment, trees sometimes grow on terrain that is difficult for personnel to reach, which brings inconvenience to the research work and even endangers the personal safety of the staff. In addition, the uneven terrain of the environment will also affect the use of infrared range finders and other instruments, resulting in inaccurate measurement ...

Claims

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Application Information

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IPC IPC(8): G01B11/06G01B11/08G01B11/00
CPCG01B11/00G01B11/0608G01B11/08
Inventor 林什全刘万山艾彩霞洪梦颖姜小路朱运才曹宇李毅刘吉善石敏鸿梁任重
Owner GUANGDONG SENLIN GREENING CO LTD
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