设计了一套城市道路交通虚拟三维场景的快速建模方案.通过移动测量、图像处理、三维建模和场景设计等方法,实现对不同控制策略(动态和静态)、道路(路网和人行道)和背景(街景、护栏和绿化等)场景模型的快速建模.应用该方案对北京市的18 km2局部道路区域进行了三维场景建模,得到了满足驾驶模拟实验需求的虚拟三维场景.实际应用表明,相比传统建模方法本方案建模效率提高了40%.应用该虚拟场景进行了120人次高仿真驾驶模拟实验,驾驶员问卷调查结果显示驾驶环境真实度高、标识信息识别效果好.%A rapid modeling scheme of virtual scene for urban road traffic is proposed in this paper.In the scheme,several techniques such as mobile measurement、image processing and three-dimension modeling method are combined to construct models of different control strategies (dynamic and static),road networks (road and sidewalk) and backgrounds (street,guardrail and greening,etc.).The scheme is applied to 3D modeling of a local road area about 18 km2 in Beijing to obtain a virtual 3D scene for driving simulation experiment.The practical application shows that the efficiency of the proposed scheme is improved by 40% compared with the traditional modeling method.The virtual scene is used to carry out a simulation experiment by 120 drivers,and the questionnaire results show that the drivers experienced a reality driving environment and the traffic signs are identified easily.
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