基于动态贝叶斯网络的虚拟盆景仿真研究

DBN-based Simulation of Virtual Plant Bonsai

虚拟植物盆景仿真是虚拟现实(VR)技术在植物生长模拟方面的应用。它既能真实地反映盆景植物的生长变化,又能逼真地模拟其外部形态。利用动态贝叶斯网络对不确定预测问题具有较强的描述能力的特点,分析植物的生理生态特征并生成虚拟植物生理生态的网络模型,通过组件接口控制其形态生长模型。由参数L系统和时变L系统结合构成的形态生长模型保证了盆景植物连续的生长特性。实验表明本系统模拟效果真实,生成的虚拟植物形态逼真。

Virtual plant bonsai emulation is a new field of simulating the growth of plant in virtual reality. A novel method is proposed to actually reflect the growth variety of bonsai plant and its external form is realistically simulated. The power ability of describing uncertain prediction problems of Dynamic Bayesian Network （DBN） was utilized, and an ecological network model of virtual plant was inferred and generated to control its morphogenetic model by component interfaces, The morphogenetic model by combining parametric L-system and timed L-system guarantee the continuous growth property of virtual plant. The experimental results indicate that this approach is both effective and realistic.