[1]吕奇,岳德鹏*. 基于数字图像处理技术的测树仪算法研究[J].西北林学院学报,2018,33(5):149-155.[doi:10.3969/j.issn.1001-7461.2018.05.23]
 Lv Qi,YUE De-peng*. Digital Image Processing Technology Based Dendrometer Algorithm[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2018,33(5):149-155.[doi:10.3969/j.issn.1001-7461.2018.05.23]
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 基于数字图像处理技术的测树仪算法研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第33卷
期数:
2018年第5期
页码:
149-155
栏目:
出版日期:
2018-09-30

文章信息/Info

Title:
 Digital Image Processing Technology Based Dendrometer Algorithm
文章编号:
1001-7461(2018)05-0149-07
作者:
 吕奇岳德鹏*
 (北京林业大学 精准林业北京市重点实验室,北京 100083)
Author(s):
 Lv QiYUE De-peng*
 (Beijing Key Laboratory of Precision Forestry,Beijing Forestry University,Beijing 100083,China)
关键词:
 数字图像处理技术边缘检测Hough变换算法胸径树高
Keywords:
 digital image processing technology edge extraction Hough transform algorithm diameter at breast height tree height
分类号:
S758.7
DOI:
10.3969/j.issn.1001-7461.2018.05.23
文献标志码:
A
摘要:
 针对支持新型测树仪立木非接触式胸径及树高测量的算法需要,从应用角度出发,基于摄像头和CMOS获取的立木树干数字图像结合数字图像处理技术,对预处理后的数字图像通过Roberts边缘检测算子进行边缘特征检测以及Hough变换对特征影像进行树干边缘直线提取,实现立木树干影像中树干像素宽度的自动获取;并依据激光测距传感器、倾角传感器等获取的距离、倾角参数,实现非接触条件下立木直径测量点离根颈高度测定、直径自动解算及树高测量。结果表明,以内蒙古旺业甸林场为试验区进行试验验证,胸径测量的平均绝对误差为-0.4 cm,平均相对误差为-1.23%,相对误差标准偏差为0.049;在不同测量距离条件下的胸径测量平均相对误差基本在-1.00%~1.00%,不同坡度、坡向条件下胸径测量的平均相对误差<6%。树高测量的平均绝对误差为0.493 m,平均相对误差为4.82%,相对误差的标准偏差为0.072。
Abstract:
 To meet algorithm study for the development of a new type dendrometer to conduct non contect measurement of standing tree height and diameter,this paper used Roberts operator and Hough transform to detect the edge of the trunk of standing tree mages from lens and CMOS,and extracted the straight line by digital image technology,which could achieve image pixel width of standing trunk.Determination of the point for diameter measurement in trunk,automatic diameter calculation and tree height measurement were achieved based on the distance and angle parameters from laser ranging sensor and tilt-angle sensor.Our experiment results in Wangyedian forest farm showed that the mean absolute error was -0.4 cm,mean relative error was -1.23% in the DBH measurement and the standard deviation of mean relative error was 0.049.In the conditions of different distance the mean relative errors were mainly at the range of -1.00%~1.00%,and the mean relative errors of different slopes and aspects were under 6%.The mean absolute error was 0.493 m,mean relative error was 4.82% in the height measurement,and the standard deviation of mean relative error was 0.072.

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备注/Memo

备注/Memo:
 收稿日期:2017-12-14修回日期:2018-02-28
基金项目:国家林业局引进国际先进林业科学技术项目(948项目)(2014-4-76)。
作者简介:吕奇,男,硕士,研究方向:3S系统集成及应用开发。E-mail:lvqi_gis@bjfu.edu.cn
*通信作者:岳德鹏,男,博士,教授,研究方向:景观生态学和土地评价。E-mail:yuedepeng@126.com
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