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林业资源管理 ›› 2020›› Issue (2): 167-172.doi: 10.13466/j.cnki.lyzygl.2020.02.025

• 技术应用 • 上一篇    下一篇

林分郁闭度自动测量系统的研建与应用

林丽丽1,2(), 郝振帮1,3, 杨柳青1,2, 高仰驰1,2, 刘艳芬1,2, 余坤勇1,3, 刘健1,2,3()   

  1. 1.3S技术与资源优化利用福建省高等学校重点实验室,福州 350002
    2.福建农林大学 艺术学院园林学院,福州 350002
    3.福建农林大学 林学院,福州 350002
  • 收稿日期:2020-02-18 修回日期:2020-04-18 出版日期:2020-04-28 发布日期:2020-06-15
  • 通讯作者: 刘健
  • 作者简介:林丽丽(1991-),女,福建莆田人,在读博士,主要研究方向:风景园林规划设计、林业3S技术应用。Email:fjldd@outlook.com
  • 基金资助:
    国家重点研发子课题(2017YFD0600901-3);福建省高校产学研合作项目(2015N5010)

The Development and Application of Automatic Measurement System for Forest Canopy Closure

LIN Lili1,2(), HAO Zhenbang1,3, YANG Liuqing1,2, GAO Yangchi1,2, LIU Yanfen1,2, YU Kunyong1,3, LIU Jian1,2,3()   

  1. 1. University Key Lab for Geomatics Technology and Optimize Resources Utilization in Fujian Province,Fuzhou 350002
    2. College of Arts College of Landscape Architecture,Fujian Agriculture and Forestry University,Fuzhou 350002
    3. College of Forestry,Fujian Agriculture and Forestry University,Fuzhou 350002
  • Received:2020-02-18 Revised:2020-04-18 Online:2020-04-28 Published:2020-06-15
  • Contact: LIU Jian

摘要:

自动快速获取林分郁闭度参数是林业信息现代化建设的需求。为快速低成本地计算郁闭度,设计了一种郁闭度自动测定系统。系统利用树莓派及算法编程进行开发,具备野外数据采集和远程信息管理的功能。采用同心圆环切割和二值化相结合的图像处理技术实现郁闭度值提取,避免复杂的鱼眼镜头畸变校正过程。系统提供可视化界面,集成树莓派、鱼眼镜头、电池和无线路由器等,操作简便。以三明市金丝湾森林公园的米槠林为研究案例,使用自动郁闭度测量系统获取林分郁闭度值与抬头望法测定的郁闭度值进行对比分析,得出系统测定的郁闭度值与抬头望法的R2为0.699。系统有助于郁闭度的快速测定。

关键词: 环切, 二值化, 郁闭度, 鱼眼镜头, 物联网

Abstract:

The requirement of forestry information modernization is to obtain the forest canopy closure automatically and quickly.In order to calculate canopy closure quickly and cheaply,an automatic measurement system was designed.The system was developed by raspberry pie and algorithm programming,which had the function of field data collection and remote information management.Canopy closure value was extracted using ring-cutting and binarization image processing technology.It avoided the complex fisheye lens distortion correction process.The system provides a visual interface,integrated raspberry pie,fisheye lens,battery and wireless router and so on,which makes it easy to operate.This study took Jinsiwan Forest Park,Sanming city as the study case.Canopy closure values determined using the automatic measurement system and look-up method,respectively.It showed that R2 was 0.699 between the automatic measurement system and look-up method.The system is helpful for the rapid measurement of canopy closure and provides reference for the application and promotion.

Key words: ring-cutting, binarization, canopy closure, fisheye lens, internet of things

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