基于位置动力学的植物动态虚拟仿真方法

发布时间：2018-03-07 03:04

本文选题：植物　切入点：虚拟仿真　出处：《中国农业科技导报》2017年03期 　论文类型：期刊论文

【摘要】：植物真实感动态虚拟仿真不仅是当前现代农业科学与植物学领域面临的难点问题之一,也是计算机应用与虚拟现实技术领域的研究热点。建立基于物理属性的真实感植物动力学模型,并利用基于物理过程的动态虚拟仿真算法是有效提高植物动态模拟真实感效果的途径。基于位置动力学的方法是一种高效模拟物体运动学-动力学过程的新方法,可有效模拟刚体、柔体目标的动态物理过程。建立一种基于位置动力学的植物动态虚拟仿真模型,引入距离约束和角度约束条件,以玉米为例实现自然条件下主要器官、植株和群体的动态虚拟仿真,获得玉米三维可视化仿真结果,与传统的基于质点弹簧模型的模拟方法相比,模拟过程具有较高的执行效率,最后对算法执行效率效果及其局限进行了分析讨论。为植物动态虚拟仿真方法研究提供新的技术参考。
[Abstract]:Plant realistic dynamic virtual simulation is not only one of the difficult problems facing the modern agricultural science and botany field, is also a research hotspot in the field of computer applications and virtual reality technology. Establish realistic plant dynamics model based on physical properties, and the use of dynamic virtual simulation algorithm based on physical process is an effective way to improve the plant dynamic simulation of realistic effect the position. Methods based on dynamics is a new method for efficient simulation of object kinematics dynamics, can effectively simulate the dynamic physical process of rigid body, soft body target. To establish a dynamic simulation model of virtual plant location based on the dynamics of the distance and angle constraint conditions, a case of corn to achieve under natural conditions the main organs, dynamic simulation virtual plants and groups, to obtain 3D visualization simulation results based on the traditional corn, and Compared with the simulation method of particle spring model, the simulation process has high execution efficiency. Finally, the efficiency and limitation of the algorithm implementation are discussed. It will provide new technical reference for the research of plant dynamic virtual simulation.

【作者单位】：北京市农林科学院北京农业信息技术研究中心数字植物北京市重点实验室;国家农业信息化工程技术研究中心;
【基金】：国家自然科学基金项目(61300079) 北京市农林科学院数字植物科技创新团队项目(JNKYT201604)资助
【分类号】：Q94;TP391.9

【参考文献】