Measuring Surface Area of Leaf based on Multi-Angle Images

Abstract

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%.