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Measuring Surface Area of Leaf based on Multi-Angle Images

Volume 14, Number 9, September 2018, pp. 2153-2162
DOI: 10.23940/ijpe.18.09.p24.21532162

Weizheng Zhang, Weiwei Zhang, Yan Liu, Guoqing Li, and Qiqiang Chen

College of Computer and Communication Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450002, China

(Submitted on June 20, 2018; Revised on July 15, 2018; Accepted on August 17, 2018)


The measurement of plant leaf area (LA) has important guiding significance for the diagnosis of plant growth status. Most of the existing methods for measuring LA are contact measurement. This paper proposes a method to directly create a 3D model of the leaf and calculate the surface area of the leaf in the natural state. Firstly, the digital camera is calibrated to obtain the camera parameters. Then, the leaves are photographed from multi-angles in order to obtain the three-dimensional point cloud; the images are processed by Photomodeler. Use MATLAB programming to achieve 3D modeling of the leaf and calculate the surface area using scanner combination Photoshop software methods. The experimental results show that the method proposed has a prominent effect on the measurement of the leaf under natural conditions with an accuracy of 99%.


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