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Tree measuring method and tree measuring system

A measurement method and tree technology, which is applied in the field of forest resources monitoring, can solve the problems of large error in tree crown projection area, low degree of automation, and heavy workload, and achieve the effects of long measurement distance, reduced workload, and improved work efficiency

Active Publication Date: 2013-06-26
谢鸿宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the canopy projected area and the actual area obtained by this measurement method have large errors and low accuracy.
[0006] Therefore, in the process of forest resources monitoring, the traditional measurement methods of tree height and crown projected area are easily limited by complex terrain factors in the forest, and the workload is heavy, the degree of automation is low, and the accuracy is not high.

Method used

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  • Tree measuring method and tree measuring system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] According to the overall growth trend of the canopy, select the sampling points of the canopy of the target tree in various directions, namely A, B, C, D, E, a total of 5 points, and use a non-prism total station to measure the three-dimensional coordinates of the sampling points counterclockwise, sampling The three-dimensional coordinate data of the point is shown in Table 1.

[0088] Table 1

[0089] name X coordinate Y coordinate Z axis coordinate A1410.4 B3.7320508083.26794919210.4 C2.732050808510.4 D4.464101615610.4 E1610.3

[0090] The processor obtains the coordinates of the sampling points collected by the prismless total station in real time, and sequentially extracts the X-axis coordinates and the Y-axis coordinates of the coordinates of the sampling points A, B, C, D, and E according to the measurement sequence of the prismless total station. The sampling points are drawn in the same layer according to the X-axis coordinates and the Y-axis coordinates.

[0091]...

Embodiment 2

[0102] According to the overall growth trend of the canopy, select the sampling points of the canopy of the target tree in various directions, which are g030111, g030112, g030113, g030114, g030115, g030116, and g030117, a total of 7 points. The total station without prism is used to measure the sampling points clockwise. The three-dimensional coordinates and the three-dimensional coordinate data of the sampling points are shown in Table 4.

[0103] Table 4

[0104] name X coordinate Y coordinate Z axis coordinate g03011149083.93219649.77910.59 g03011249081.28219648.14410.532 g03011349078.44919649.42910.513 g03011449079.18319645.92810.537 g03011549082.08219645.2610.427 g03011649083.30619646.53410.46 g03011749085.17919647.82410.48

[0105] The processor obtains the coordinates of the sampling points collected by the prismless total station in real time, and sequentially extracts the X-axis coordinates of the sampling points g030111, g030112, g030113, g030114, g030115, g030116, and...

Embodiment 3

[0112] According to the overall growth trend of the tree crown, select the sampling points of the tree crown of the target tree in various directions, which are g030211, g030212, g030213, g030214, g030215, and g030216, a total of 6 points, and measure the three-dimensional coordinates of the sampling points counterclockwise with a non-prism total station. , The three-dimensional coordinate data of the sampling points are shown in Table 5.

[0113] table 5

[0114] name X coordinate Y coordinate Z axis coordinate g03021149079.16719657.37310.408 g03021249081.62119657.19910.42 g03021349082.5619657.95410.473 g03021449081.52419659.79510.44 g03021549080.70419657.88410.314 g03021649079.04119658.28810.357

[0115] The processor obtains the coordinates of the sampling points collected by the non-prism total station in real time, and sequentially extracts the X-axis coordinates and the Y-axis of the coordinates of the sampling points g030211, g030212, g030213, g030214, g030215, and g03021...

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Abstract

The invention discloses a tree measuring method including that sampling point information collected by a non-prism total station in real time is acquired by a processor, the sampling point information includes a highest altitude Ht, a lowest altitude Hb and sampling point coordinates; a tree height H is calculated by the processor according to the highest altitude Ht and the lowest altitude Hb, the tree height H=Ht-Hb; tree crown projected area is calculated by the processor according to the sampling point coordinates. The invention further discloses a tree measuring system. By the aid of the tree measuring system and method, the sampling point information of object trees is accurately and efficiently collected by the non-prism total station in complex terrain situation; and the tree height and the tree crown projected area are calculated by the processor. And meanwhile, when the tree crown projected area is calculated, non-linear tree crown projection is linearized by combining a concave-convex polygon according to tree crown total grow state; the tree crown projection is transformed into an arc polygon with concave arcs and convex arcs to be calculated; and the accuracy is high.

Description

Technical field [0001] The invention relates to the field of forest resource monitoring, in particular to a tree measurement method and a tree measurement system. Background technique [0002] In traditional forest resource monitoring, accurate measurement of tree height and canopy projection area has always been a difficult problem. [0003] Generally, the tree height is mainly measured with an altimeter, a compass, etc., but when this method is used for measurement, the data cannot be stored and calculated in real time, and the data can only be recorded manually, which has low accuracy and heavy workload. [0004] The projected area of ​​the tree crown is usually regarded as a circle, and the area is calculated by measuring the crown diameter with a ruler. However, the measurement method uses visual estimation, manual operation, and low accuracy. [0005] In addition, Feng Zhongke of Beijing Forestry University and others have proposed to use a total station with a prism to measure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/02G01B21/28G01C5/00
Inventor 谢鸿宇杨木壮徐峰李长辉李展聪唐雪锋张泳茵
Owner 谢鸿宇
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