关键词: 植物；叶片；三维重建；点云

Abstract:

Leaf blade is one of the most important plant organs. A geometric modeling method based on point cloud of plant leaf blades was proposed to build a plant leaf blade model with high precision. According to the morphological characteristics of plant leaves, a suitable 3D scanner was chosen to obtain point cloud data of leaf blades. Then operations including registration, simplification and denoising were conducted, and high quality point cloud data of leaf blades was obtained. On this basis, leaf blades mesh generation and mesh optimization were carried out to obtain mesh leaf model with high precision. Geometric models of cucumber, maize and 2 different varieties of grape leaves were modeled using this method. The results showed that this model could better maintain the morphology characteristics of leaf blades. And this method had greatly improved model accuracy and realistic sense compared with the former ones. This study has great significance for promoting geometric modeling and further visual computing in digital plants.

Key words: plant, leaf blade, three\, dimensional reconstruction, point clouds