Research on Measurement Method of Leaf Length and Width Based on Point Cloud
1
College of Information and Electrical Engineering, China Agricultural University, Qinghuadonglu No.17, Haidian District, Beijing 100083, China
2
Engineering Practice Innovation Center, China Agricultural University, Qinghuadonglu No.17, Haidian District, Beijing 100083, China
*
Author to whom correspondence should be addressed.
Agriculture 2021, 11(1), 63; https://doi.org/10.3390/agriculture11010063
Received: 1 December 2020 / Revised: 8 January 2021 / Accepted: 11 January 2021 / Published: 13 January 2021
(This article belongs to the Special Issue New Technologies and Spatiotemporal Approaches in Precision Agriculture)
Leaf is an important organ for photosynthesis and transpiration associated with the plants’ growth. Through the study of leaf phenotype, it the physiological characteristics produced by the interaction of the morphological parameters with the environment can be understood. In order to realize the assessment of the spatial morphology of leaves, a method based on three-dimensional stereo vision was introduced to extract the shape information, including the length and width of the leaves. Firstly, a depth sensor was used to collect the point cloud of plant leaves. Then, the leaf coordinate system was adjusted by principal component analysis to extract the region of interest; and compared with a cross-sectional method, the geodesic distance method, we proposed a method based on the cutting plane to obtain the intersecting line of the three-dimensional leaf model. Eggplant leaves were used to compare the accuracy of these methods in the measurement of a single leaf.
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Keywords:
point cloud; leaf phenotype; surface distance; 3D measurement
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MDPI and ACS Style
Wang, Y.; Chen, Y.; Zhang, X.; Gong, W. Research on Measurement Method of Leaf Length and Width Based on Point Cloud. Agriculture 2021, 11, 63. https://doi.org/10.3390/agriculture11010063
AMA Style
Wang Y, Chen Y, Zhang X, Gong W. Research on Measurement Method of Leaf Length and Width Based on Point Cloud. Agriculture. 2021; 11(1):63. https://doi.org/10.3390/agriculture11010063
Chicago/Turabian StyleWang, Yawei; Chen, Yifei; Zhang, Xiangnan; Gong, Wenwen. 2021. "Research on Measurement Method of Leaf Length and Width Based on Point Cloud" Agriculture 11, no. 1: 63. https://doi.org/10.3390/agriculture11010063
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