基于骨架模型的玉米生长运动仿真与动画生成技术

Growth Simulation and Animation Creation of Corn Based on Skeleton Model

为了实现作物生长过程的定量化、可视化表达,提出了一种由作物形态结构特征参数驱动的作物骨架模型生长运动仿真和动画生成方法。基于对作物器官及个体精确定义的几何模型提取作物骨架,利用几何模型参数控制骨架上关节点的运动,结合参数关键帧插值技术确定整个骨架模型的生长运动,实现对作物生长运动的可视化模拟。从而构建一个虚拟作物骨架模型的三维生长动画系统,并以玉米为例进行了模拟。实验结果表明该方法能够较准确地模拟玉米植株的形态建成和运动特征,为真实、自然地模拟作物生长提供了一种可控、通用的方法。

With the aim to achieve the quantified and visualized expression of crop growth, taking corn as an example,a simulation framework,which integrated parametric keyframe animation with the skeleton model was proposed.At first,a skeleton model for its topological structure was adopted,which was defined based on a precise geometric model.The dynamic creation of the parabolic curve of blade midrib integrated time variant was used to stimulate the elongation of leaf skeleton.With parametric keyframe technique,of which each keyframe parameters was acquired from the observed data or the output of corn growth model,the animation could be obtained by manual interaction.Experimental results showed that the proposed method could simulate the basic movements of corn growth visually with highly realistic rendering effects.It provides a simple and general dynamic process simulation for plant growth.