Establishing method for three-dimensional model of vine cane plant

Abstract

The invention provides an establishing method for a three-dimensional model of a vine cane plant. The establishing method comprises the following specific steps: acquiring morphological feature information of vine, petiole and leaves of the vine cane plant; dividing the leaves into three insertion position zones according to the insertion position of the petiole on the vine; selecting a plurality of leaves from each insertion position zone and carrying out three-dimensional scanning on the selected leaves to establish a three-dimensional model for the leaves of the vine cane plant; establishing a three-dimensional model for the vine and petiole of the vine cane plant; and establishing an overall shape three-dimensional model for the vine cane plant. The establishing method provided by the invention greatly reduces the workload for data acquisition while causing the finally established three-dimensional model of the plant to have higher accuracy and precision, and so a simple and practical basic data preparation method is provided for such agricultural researches as crop plant-type analysis, calculation for physiological and ecological index of plant canopy, and the like.

Description

technical field [0001] The invention relates to general three-dimensional measurement data processing or three-dimensional graphics generation, and in particular to a method for establishing a three-dimensional model of vine plants based on three-dimensional digital data. Background technique [0002] In order to establish the three-dimensional morphological structure of plants, some researchers have proposed a three-dimensional plant modeling method based on morphological characteristic parameters. This method first obtains the morphological characteristic parameters of plant organs and plants, and establishes the parameterization of main plant organs based on these parameters. The geometric model is based on the geometric model of each organ, combined with the topological structure characteristics of the plant, and combines various organs through a random method or an interactive design method to form a three-dimensional shape of the overall structure of the plant. In this...

AI Technical Summary

Problems solved by technology

In this method, when collecting feature points in branch space, only feature points are collected for the main stem and petiole of the plant, and the orientation of the petiole is used to control the direction of the leaf grid model placed during plant reconstruction in the later stage, but the orientation of the petiole only specifies the Therefore, in the 3D model of the plant reconstructed by this method, the leaf inclination angle of each leaf is the same (or randomly determined), and this is obviously It does not match the spatial posture of leaves of real plants, resulting in large errors in statistical data such as canopy projected area and leaf area index in the reconstructed plant model and real plants, which greatly reduces the quality of 3D reconstruction and affects further plant canopy. Accuracy of Layer Physiological Index Calculation

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