Research on Measurement Method of Leaf Length and Width Based on Point Cloud

Leaf is an important organ for photosynthesis and transpiration associated with the plants’ growth. Through study of leaf phenotype, it physiological characteristics produced by interaction morphological parameters environment can be understood. In order to realize assessment spatial morphology leaves, a method based on three-dimensional stereo vision was introduced extract shape information, including length width leaves. Firstly, depth sensor used collect point cloud plant Then, coordinate system adjusted principal component analysis region interest; compared cross-sectional method, geodesic distance we proposed cutting plane obtain intersecting line model. Eggplant leaves were compare accuracy these methods in measurement single leaf.