The invention discloses a method and a
system of three-dimensional reconstruction of a shape structure of trees in a leaved state. The method comprises acquiring three-dimensional
point cloud data of trees and carrying out preprocessing and simplifying
processing to obtain simplified three-dimensional
cloud data set of the trees, carrying out organ segmentation to the simplified three-dimensional
point cloud data set of the trees to obtain the three-dimensional
point cloud data of each organ, wherein the three-dimensional point
cloud data of each organ comprise the three-dimensional point
cloud data of a leaf organ, the three-dimensional point cloud
data set of a main
trunk, the three-dimensional point cloud
data set of a
main branch and the three-dimensional point cloud data set of a sprout, extracting the frameworks of limbs of the trees according to the three-dimensional point cloud data set of the main
trunk, the three-dimensional point cloud data set of the
main branch and the three-dimensional point cloud data set of the sprout and optimizing the frameworks of the limbs of the trees, carrying out meshing to the frameworks of the limbs of the trees to generate a three-dimensional
mesh model of the limbs of the trees, classifying each limb of the frameworks of the limbs of the trees, and carrying out
canopy three-dimensional reconstruction. The fast three-dimensional reconstruction of the shape structure of the trees in the leaved state is achieved, and therefore a method and a high-precision basic model support are provided for the
structural analysis of the canopies of the trees, the evaluation of the physiological and ecological characteristics and the like.