Tree measuring method based on intelligent terminal lens

A technology of intelligent terminals and measurement methods, applied in the direction of measuring devices, instruments, optical devices, etc., can solve problems such as low efficiency, difficult operation, complicated troubles, etc.

Active Publication Date: 2015-11-18
BEIJING UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0005] The main purpose of the present invention is to overcome the shortcomings of difficult operation, low efficiency and complicated troubles of using tape measures or large-scale measuring instruments in the past, and realize the tree measurement method based on intelligent terminals with the advantages of high efficiency, easy portability and high precision. The present invention proposes By combining technologies such as computer vision, mathematical geometry model, camera calibration and orthogonal test analysis, the measurement model of tree height, diameter at breast height and crown width is developed, which is used for the measurement of tree information in garden management, and provides a tool for tree information collection and management. advanced means and tools

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  • Tree measuring method based on intelligent terminal lens
  • Tree measuring method based on intelligent terminal lens
  • Tree measuring method based on intelligent terminal lens

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Embodiment Construction

[0027] The present embodiment is described in detail below in conjunction with accompanying drawing:

[0028] (1) Use the smart terminal as a tool to measure tree height, diameter at breast height and crown width. Use the designed software to control the camera to take pictures or import the pictures stored in the terminal, then use the touch screen pen to select the tree coordinates in the image, and measure the tree information through model calculation.

[0029] (2) First select the level ground. When the shooting height of the smart terminal lens is 1.5 meters and the shooting angle is 90 degrees, the best distance is that the trees are completely in the screen. Take pictures of the trees and take good photos through camera calibration technology. Distortion correction, avoid radial distortion and barrel distortion, improve measurement accuracy.

[0030] (3) Use the touch screen pen to click on the tree top and bottom of the collected tree pictures to obtain the tree coor...

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Abstract

Provided is a tree measuring method based on an intelligent terminal lens. According to the method, defects of difficult operation, low efficiency, and complexity and inconvenience of conventional measurement by employing a measuring tape or a large-scale measuring instrument are overcome, the best shooting environment is obtained, valuable guidance opinions are provided for the improvement of data accuracy, a measuring model for tree height, the diameter at breast height, and crown diameter is developed with the combination of technologies of computer vision, the mathematical geometrical model, camera calibration, and the orthogonal test analysis, the model can be used for measuring tree information in garden management, and advanced means and tools are provided for tree information acquisition and management.

Description

technical field [0001] The present invention realizes the measurement of tree growth information (tree height, diameter at breast height, and crown width information) by using a model to take pictures of trees to be measured through an intelligent terminal lens on a horizontal ground. Background technique [0002] The collection of forest information is the basis of forest resources investigation and forestry visualization, and it is a complex and arduous task. With the development of computer and other modern technologies, there are more methods, more advanced technology, higher efficiency and accuracy of forest information collection. In order to measure tree height, tree crown, diameter at breast height, etc., traditional methods mainly use measurement tools such as girth or calipers, and manual reading and recording of measurement data is required. This will undoubtedly consume a lot of manpower and financial resources, and the degree of automation is low and the accura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B11/02G01B11/08
Inventor 王波涛宋江雪
Owner BEIJING UNIV OF TECH
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