面向交通枢纽的车辆三维真实感实时仿真

为分析和解决城市交通拥挤问题并提高城市道路利用率提供可行的途径,提出了一种面向交通枢纽的车辆运行仿真方法,通过场景、道路与车辆的三维动态建模,实现交通枢纽交通状况的实时真实感仿真.首先,提出了基于道路关键点连接网络模型表示交通枢纽的通行道路.其次,基于粒子系统实现车辆的动态运行实时仿真,并采用基于空间剖分的车辆碰撞检测方法对车辆运动控制算法进行了优化.最终,通过对路段的动态观测和反馈机制实现车辆行驶路线的规划和调度.实验结果表明,本文提出的方法可以生动直观地呈现实际路面的交通状况,并且能以较为流畅的帧速率实现交通场景的动态仿真.

Real-Time Three-Dimensional Vehicular Traffic Simulation for Transportation Hubs

Vehicular traffic simulation is a useful tool for solving the problem of urban traffic jam and improving the utilization of city roads. In this paper,we present a simulation method for modeling the movement of vehicles in a transportation hub,in which the vehicles,roads and other scenarios are rendered by three-dimensional dynamic modeling techniques,and the dynamic traffic condition of a transportation hub is simulated at a real-time frame rate. To achieve realistic simulation,a key pointbased road network representation method is firstly proposed to describe vehicular transportation hub.Then a vehicle operation method based on a particle system is applied to obtain real-time simulation,in which a space subdivision-based collision detection method is used to optimize the controlling algorithm of vehicle motion. Finally,a dynamic observation and feedback mechanism is presented to solve the problem of planning and scheduling vehicle routes. The simulation results show that the proposed method can vividly demonstrate the real traffic conditions with a high rending frame rate.