Mr. Zongnan Li Profile

Zongnan Li

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Proceedings Article | 20 November 2014 Paper

Three dimensional (3D) distribution calculation of chlorophyll in rice based on infrared imaging technique

Zong-nan Li, Jing Xie, Jian Zhang

Proceedings Volume 9300, 93002H (2014) https://doi.org/10.1117/12.2073219

KEYWORDS: 3D modeling, RGB color model, Near infrared, 3D image processing, Volume rendering, 3D metrology, Cameras, Chemical analysis, Imaging systems, Infrared imaging

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Chlorophyll content and distribution in leaf can reflect the plant health and nutrient status of the plant indirectly. It is meaningful to monitor the 3D distribution of chlorophyll in plant science. It can be done by the method in this paper: Firstly, the chlorophyll contents at different point in leaf are measured with the SPAD-502 chlorophyll meter, and the RGN images composed by the channel R, G and NIR are captured with the imaging system. Secondly, the 3D model is built from the RGN images and the RGN texture map containing all the information of R, G and NIR is generated. Thirdly, the regression model between chlorophyll content and color characteristics is established. Finally, the 3D distribution of chlorophyll in rice is captured by mapping the 2D distribution map of chlorophyll calculated by the regression model to the 3D model. This methodology achieves the combination of phenotype and physiology, it can calculated the 3D distribution of chlorophyll in rice well. The color characteristic g is good indicator of chlorophyll content which can be used to measure the 3D distribution of chlorophyll quickly. Moreover, the methodology can be used to high throughout analyze the rice.

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