Estimating Rice LAI Based on Digital Camera and Image Processig

A fast, low-cost method for rice canopy leaf area index (LAI) estimation is proposed. Take photos office canopy with a 57[degrees] view angle from above using a common digital camera. Extract canopy gap fraction by digital image processing technology. Then LAI can be estimated using canopy gap fract...

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Bibliographic Details
Published in:Key engineering materials 2012-01, Vol.500, p.586-591
Main Authors: Pan, Gui Ying, Zhou, Lian Qing, Shi, Zhou
Format: Article
Language:English
Subjects:
Canopies
Digital
Digital cameras
Estimating
Image processing
Leaf area index
Offices
Rice
Online Access:Get full text
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Summary:A fast, low-cost method for rice canopy leaf area index (LAI) estimation is proposed. Take photos office canopy with a 57[degrees] view angle from above using a common digital camera. Extract canopy gap fraction by digital image processing technology. Then LAI can be estimated using canopy gap fraction based on optical transmission model and Leaf angle distribution model. AccuPAR-LP80 and direct measurement were employed to provide Comparative data. Comparison of the three methods, we obtained high correlation coefficients (R super(2)[> or =]0.6). The result shows that the method is especially suitable for estimating LAI in early growth stage of rice.
ISSN:1013-9826
DOI:10.4028/www.scientific.net/KEM.500.586