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2021 Vol.63, Issue 6 Preview Page
Evaluation of Optical Porosity of Thuja occidentalis by Image Analysis and Correlation with Aerodynamic Coefficients

이미지 분석을 통한 서양측백나무의 광학적 공극도 산정 및 공기역학계수와의 상관성 평가

Dong-hwa Janga
,
Ka-Young Yangb
,
Jong-bok Kimc
,
Kyeong-seok Kwond
,
Taehwan Hae†
장 동화a
,
양 가영b
,
김 종복c
,
권 경석d
,
하 태환e†
aPost M.S., Division of Animal Environment, National Institute of Animal Science (NIAS)
bPost Doc., Division of Animal Environment, National Institute of Animal Science (NIAS)
cSenior Researcher, Division of Animal Environment, National Institute of Animal Science (NIAS)
dResearcher, Division of Animal Environment, National Institute of Animal Science (NIAS)
eResearcher, Division of Animal Environment, National Institute of Animal Science (NIAS)
a미국 국립동물과학원 동물환경과(NIAS) 포스트 엠에스
b국립축산과학원 동물환경과 BPost Doc.
c국립축산과학원 동물환경과 수석연구원
d국립축산과학원 동물환경과(NIAS)
e국립축산과학원 동물환경과 eResearcher
† Corresponding author Tel.: +82-63-238-7406, Fax: +82-63-238-7447 E-mail: thha54@korea.kr
2021. pp. 38-47
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Abstract

Reduction effect of the spread of odorant and fine dust through windbreak trees can be predicted through numerical analysis. However, there is a disadvantage that a large space and destructive experiments must be carried out each time to calculate the aerodynamic coefficient of the tree. In order to overcome these shortcomings, In this study, we aimed to estimate the aerodynamic coefficient (C0, C1, C2) by using image processing. Thuja occidentalis, which can be used as windbreak were used as the material. The leaf area index was estimated from the leaf area ratio using image processing with leaf weight, and the optical porosity was calculated through image processing of photos taken from the side while removing the leaves step-by-step. Correlation analysis was conducted with the aerodynamic coefficient of Thuja occidentalis calculated from the wind tunnel test and leaf area index and optical porosity calculated from the image analysis. The aerodynamic coefficient showed positive and negative correlations with the leaf area index and optical porosity, respectively. The results showed that the possibility of estimating the aerodynamic coefficient using image processing.

Keywords
Aerodynamic coefficient
image processing
windbreak tree
leaf area index
optical porosity
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Information
  • Publisher :The Korean Society of Agricultural Engineers
  • Publisher(Ko) :한국농공학회
  • Journal Title :Journal of Korean Society of Agricultural Engineers
  • Journal Title(Ko) :한국농공학회논문집
  • Volume : 63
  • No :6
  • Pages :38-47
  • Received Date : 2021-10-08
  • Revised Date : 2021-10-19
  • Accepted Date : 2021-10-26
  • DOI :https://doi.org/10.5389/KSAE.2021.63.6.039
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