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2024 Vol.33, Issue 4 Preview Page

Original Articles

Comparison of Imaging and Actual Measurement ​​of Plant Height and Leaf Area of ​​Cucumber Grafted Seedlings using LiDAR and Multispectral Camera

LiDAR와 다중분광카메라를 이용한 오이 접목묘의 초장 및 엽면적의 영상값과 실측값의 비교

Hyo Jung Jang1
,
Ju Young Hong1
,
Seung Wook Choi1
,
Han Na Lee1
,
Jun Gu Lee2
,
Yurina Kwack3
,
Seung Wook Song4
,
Hye Jin Lee5
,
Yang Gyu Ku67*
장 효정1
,
홍 주영1
,
최 승욱1
,
이 한나1
,
이 준구2
,
곽 유리나3
,
송 승욱4
,
이 혜진5
,
구 양규67*
1Graduate Student, Department of Horticulture, Wonkwang University, Iksan 54538, Korea
2Professor, Department of Horticulture, College of Agriculture Life Sciences, Jeonbuk National University, Jeonju 54896, Korea
3Professor, Department of Environmental Horticulture, University of Seoul, Seoul 02504, Korea
4Senior Director, Podo Inc., Digital New Technology Business, Seongnam 13449, Korea
5Researcher, Vegetable Research Division, National Institute of Horticultural Herb, Wanju 55365, Korea
6Professor, Department of Horticulture, Wonkwang University, Iksan 54538, Korea
7Director, Institute of Life Science and Natural Resources, Wonkwang University, Iksan 54538, Korea
1원광대학교 원예학과 대학원생
2전북대학교 원예학과 교수
3서울시립대학교 환경원예학과 교수
4㈜포도 디지털신기술사업단 단장
5국립원예특작과학원 채소과
6원광대학교 원예산업학과 교수
7원광대학교 생명자원과학연구소 소장
*Corresponding Author
31 October 2024. pp. 269-279
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Abstract

This study was conducted to develop the ability to determine seedling conditions by correlating image values with actual measurements, we investigated whether cucumber plant height and leaf area correlate by comparing LiDAR and multispectral seedling imaging data with actual measurements obtained via the destruction of seedlings. Cucumber plants were grafted using the ‘Heukjong’ (Cucurbita ficifolia, cv. Heukjong) stock and the ‘Goodmorningbackdadagi,’ ‘Nakwonseongcheongjang’, and ‘Sinsedae’ scions. Multispectral imaging was obtained before grafting, and at weeks 1, 2, and 3 after grafting. The overlapping leaf area per plug tray was calculated by subtracting the imaging measured values from the actual measured values. The result showed that the highest plant height and leaf area values ​​were obtained when the ‘Nakwonseongcheongjang’ variety was grafted on to ‘Heukjong’, and the SPAD value, an indicator of chlorophyll content, was the highest for seedlings grafted with ‘Sinsedae’ scions on to ‘Heukjong’. In experiments, the plant height of cucumber grafted seedlings showed a higher correlation in plug trays than in individual units, and the correlation between the actual value and the image value of the leaf area in plug tray units showed a high correlation of R2 = 0.85 or higher, indicating that LiDAR and multispectral images can be used to predict plant height and leaf area in plug tray units. However, the overlapping area in plug tray units is larger than in individual units. As the number of weeks after grafting increases, the leaf area becomes wider and the overlapping area increases. When measuring leaf area in plug tray units, research is needed to correct the overlapping area of ​​leaves to reduce the error between the image value and the actual value.

Keywords
Cucumis sativus L.
grafting
overlapping leaf area
rootstock
scion

본 연구는 오이 육묘 단계에서 영상값과 실측값 간의 상관관계를 통해 묘의 생육 상태를 진단하기 위해 수행되었다. 이를 위해 LiDAR 센서와 다중분광카메라를 이용해 촬영한 영상과 파괴적으로 측정한 묘의 초장 및 엽면적을 비교하였다. 실험에 이용된 대목 품종은 ‘흑종’, 오이의 접수 품종은 ‘굿모닝백다다기’, ‘낙원성청장’, ‘신세대’이다. 다중분광영상 촬영은 접목 후 1주, 2주, 3주로 진행하였다. 영상값은 LiDAR 센서로 초장을, 다중분광카메라로 엽면적을 비파괴적으로 측정하였다. 엽면적의 실측값은 엽면적 측정기를 이용해 파괴적으로 측정하였다. 플러그 트레이 단위에서 중첩된 엽면적은 실측값에서 영상값을 빼서 계산하였다. 봄과 여름에 진행한 오이 접목묘의 생육조사는 ‘흑종’에 ‘낙원성청장’ 품종을 접목했을 때 가장 높은 초장과 엽면적 값을 나타냈으며, 엽록소함량을 나타내는 지표인 SPAD 값은 ‘흑종’에 ‘신세대’ 접수를 접목한 묘가 가장 높았다. 봄과 여름에 진행한 실험에서 오이 접목묘의 초장은 개체 단위에 비해 플러그 트레이에서 더 높은 상관관계를 나타냈으며, 플러그 트레이 단위 엽면적의 실측값과 영상값의 상관관계는 R2= 0.85 이상으로 높은 상관관계를 보여 플러그 트레이 단위에서 LiDAR 및 다중분광영상 기술을 활용해 초장과 엽면적을 예측할 수 있을 것으로 기대된다. 하지만, 플러그 트레이 단위에서는 개체 단위에 비해 중첩된 엽면적이 많고, 접목 후 시간이 경과함에 따라 엽면적이 넓어지며 중첩되는 면적이 많아진다. 따라서, 플러그 트레이 단위에서 엽면적을 측정할 때, 영상값과 실측값 사이의 오차를 줄이기 위해 중첩되는 엽면적을 보정하기 위한 연구를 진행할 필요성이 요구된다.

키워드
대목
오이
접목
접수
중첩 엽면적
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Journal of Bio-Environment Control
  • Journal Title(Ko) :생물환경조절학회지
  • Volume : 33
  • No :4
  • Pages :269-279
  • Received Date : 2024-09-06
  • Revised Date : 2024-10-03
  • Accepted Date : 2024-10-07
  • DOI :https://doi.org/10.12791/KSBEC.2024.33.4.269
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