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Forest and Grassland Resources Research >

2020 , Vol. 0 >Issue 2: 167 - 172

DOI: https://doi.org/10.13466/j.cnki.lyzygl.2020.02.025

Technical Application

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

  • Lili LIN ,
  • Zhenbang HAO ,
  • Liuqing YANG ,
  • Yangchi GAO ,
  • Yanfen LIU ,
  • Kunyong YU ,
  • Jian LIU
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  • 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 date: 2020-02-18

  Revised date: 2020-04-18

  Online published: 2020-06-15

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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

Cite this article

Lili LIN , Zhenbang HAO , Liuqing YANG , Yangchi GAO , Yanfen LIU , Kunyong YU , Jian LIU . The Development and Application of Automatic Measurement System for Forest Canopy Closure[J]. Forest and Grassland Resources Research, 2020 , 0(2) : 167 -172 . DOI: 10.13466/j.cnki.lyzygl.2020.02.025

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