article · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2005
Measurement of leaf area index using image-processing technology
Zhengjun Qiu, Hui Fang, Yun Zhang, Yong He
Cited by 1Abstract and details only
Abstract
Leaf Area Index (LAI), as a fundamental parameter to evaluate the physiological condition of plants, was calculated by image processing based on machine vision technology. The measurement system hardware consisted primarily of the MS3100 3CCD camera, the image grabber card, a desktop computer and the acquired images were processed by Matlab and ENVI. After acquiring the 3 images by the 3CCD camera of Green, Red and NIR channels, the NIR image was considered more effective in separating the soil background for its higher contrast value. Thus, it was selected for image processing to calculate the leaf area index (LAI). The transect method was applied to obtain the threshold 50 in the binary image conversion and the soil background was thus eliminated as a result that most of its reflectance in the image was under 50. Then the 'imerode'-'imdilate' operation in the image processing box of Matlab was used to remove the left crop stem noises, including those small weeds in the binary image background. Consequently, the LAI of the acquired NIR image was calculated as 0.523 by dividing the total image pixel amount by that of the black pixels in the binary image.
Cite this paper
Qiu, Z., Fang, H., Zhang, Y., & He, Y. (2005). Measurement of leaf area index using image-processing technology. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE, 6043, 60430A. https://doi.org/10.1117/12.652409
Qiu, Zhengjun, et al. “Measurement of leaf area index using image-processing technology.” Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE, vol. 6043, 2005, p. 60430A, https://doi.org/10.1117/12.652409.
Qiu, Zhengjun, Hui Fang, Yun Zhang, and Yong He. 2005. “Measurement of leaf area index using image-processing technology.” Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 6043: 60430A. https://doi.org/10.1117/12.652409.
Qiu, Z. et al. (2005) ‘Measurement of leaf area index using image-processing technology’, Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE, 6043, p. 60430A. Available at: https://doi.org/10.1117/12.652409.
@article{qiu2005measurement,
title = {{Measurement of leaf area index using image-processing technology}},
author = {Qiu, Zhengjun and Fang, Hui and Zhang, Yun and He, Yong},
journal = {Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE},
volume = {6043},
pages = {60430A},
year = {2005},
doi = {10.1117/12.652409}
}Made from the index record. Check names, capitalisation and page numbers against the paper. Need another style? AI for Research has over 10,000.