A tree measurement method and tree measurement 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 low precision, and achieve the effects of long measurement distance, reduced workload, and improved work efficiency

Active Publication Date: 2016-01-20
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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  • A tree measurement method and tree measurement system
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  • A tree measurement method and tree measurement system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0088] Table 1

[0089] name X-axis coordinates Y-axis coordinates Z-axis coordinates A 1 4 10.4 B 3.732050808 3.267949192 10.4 C 2.732050808 5 10.4 D 4.464101615 6 10.4 E 1 6 10.3

[0090] 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 Y-axis coordinates of the sampling points A, B, C, D, and E according to the measurement order of the non-prism total station, The sampling points are drawn in the same layer accordi...

Embodiment 2

[0102] According to the overall growth trend of the crown, select the sampling points of the crown of the target tree in each direction, namely g030111, g030112, g030113, g030114, g030115, g030116, g030117, a total of 7 points, and use the non-prism total station to measure the sampling point clockwise Three-dimensional coordinates, the three-dimensional coordinate data of sampling points are shown in Table 4.

[0103] Table 4

[0104] name X-axis coordinates Y-axis coordinates Z-axis coordinates g030111 49083.932 19649.779 10.59 g030112 49081.282 19648.144 10.532 g030113 49078.449 19649.429 10.513 g030114 49079.183 19645.928 10.537 g030115 49082.082 19645.26 10.427 g030116 49083.306 19646.534 10.46 g030117 49085.179 19647.824 10.48

[0105] 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 ...

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 each direction, namely g030211, g030212, g030213, g030214, g030215, g030216, a total of 6 points, and measure the three-dimensional coordinates of the sampling points counterclockwise with a non-prism total station , and the three-dimensional coordinate data of the sampling points are shown in Table 5.

[0113] table 5

[0114] name X-axis coordinates Y-axis coordinates Z-axis coordinates g030211 49079.167 19657.373 10.408 g030212 49081.621 19657.199 10.42 g030213 49082.56 19657.954 10.473 g030214 49081.524 19659.795 10.44 g030215 49080.704 19657.884 10.314 g030216 49079.041 19658.288 10.357

[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 coo...

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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 measuring method and a tree measuring system. Background technique [0002] In traditional forest resource monitoring, it has always been a difficult problem to accurately measure tree height and projected crown area. [0003] Usually, the tree height is mainly measured by altimeter, compass, etc., but when using this method, the data cannot be stored and calculated in real time, and the data can only be recorded manually, which has low precision and heavy workload. [0004] The projected area of ​​the tree crown is mostly regarded as a circle, and the area is calculated by measuring the crown diameter with a ruler. However, this measurement method uses the visual estimation method, which is manually operated, and the accuracy is low. [0005] In addition, Feng Zhongke of Beijing Forestry University and others once proposed to use a prism total station to measure...

Claims

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Application Information

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Patent Type & Authority Patents(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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