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Method for measuring volume of single tree using smart phone

A smart phone and wood technology, which is applied to mechanical measuring devices, measuring devices, and mechanical devices, etc., can solve the problems of destroying the forest environment and calculating the complex volume of a single wood, so as to achieve the effect of convenient measurement.

Inactive Publication Date: 2017-07-21
BEIJING FORESTRY UNIVERSITY
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  • Abstract
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  • Claims
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Problems solved by technology

[0007] In order to solve the problem of calculating the volume of a single tree in the forest investigation work, which is complicated and destroys the forest environment, the invention provides a method for measuring the volume of a single tree with a smart phone, and the features are as follows:

Method used

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  • Method for measuring volume of single tree using smart phone

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Embodiment Construction

[0018] A method for measuring the volume of a single wood with a smart phone, the specific method is:

[0019] (1) At the DBH of a single tree, take a photo vertically. Know the focal length of the camera, the DBH d of a single tree, the inclination angle at any height, and the azimuth α formed by the width of the DBH and the focal point in the horizontal direction. Calculate the horizontal distance using the formula And according to the inclination β measured by the mobile phone at any height, the height of a single tree at any height can be measured.

[0020] (2) According to the known focal length f of the camera and the corresponding distance on the photo, the diameter of the single tree at any height can be calculated. Divide the single wood into 10-20 sections (m sections), calculate the volume of each section by using the pillar method and take the sum to obtain the volume value of the single wood.

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Abstract

The invention provides a method for measuring the volume of a single tree using a smart phone. The method is characterized in that a photo of a single tree is acquired using a smart phone, and the focal length of the camera, the diameter-at-breast-height d of the single tree, the tilt angle at any height, and the azimuth angle formed by the diameter-at-breast-height width and the focus in the horizontal direction are known; the height of the single tree at any height can be measured according to the tilt angle at any height measured by the smart phone; the diameter of the single tree at any height can be calculated according to the known focal length of the camera and the corresponding distance on the photo; and finally, the volume is calculated section by section using a pillar method, and the sum of the volumes is calculated, namely, the volume value of the single tree.

Description

[0001] 1. Technical field [0002] The invention relates to a method for measuring the volume of a single wood with a smart phone [0003] 2. Technical background [0004] In the forest investigation work, the traditional method of measuring the volume of a single tree needs to cut down a single tree, measure it section by section, and calculate the volume by summing the volume. It is time-consuming and labor-intensive, causing great damage to the forest. [0005] The present invention utilizes the photos of a single tree acquired by a smart phone, the azimuth angle and the inclination angle measured by the mobile phone to measure the volume of a single tree, and the volume can be measured after the diameter at breast height of a single tree is known. [0006] 3. Contents of the invention [0007] In order to solve the problem of calculating the volume of a single tree in the forest investigation work, which is complicated and destroys the forest environment, the present inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B11/06G01B11/08
CPCG01B11/00G01B5/0035G01B11/0608G01B11/08
Inventor 冯仲科范永祥张晓艺邱梓轩
Owner BEIJING FORESTRY UNIVERSITY
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