基于虚拟现实的地理信息三维可视化系统设计

Design of 3D Visualization System of Geographic Information Based on Virtual Reality

用户在应用常规的地理信息三维可视化系统时,注视轨迹复杂、扫视路径混乱,无法准确直观地找到所需要的地理信息。针对这一问题,提出基于虚拟现实的地理信息三维可视化系统设计。首先,在原有硬件结构的基础上,选择S3C2440A型号微处理器,优化电路电源模式的切换功能;其次,利用虚拟现实技术,分析空间通视性,并利用数字高程模型生成三维地表;然后,采用地形分割方式,提高网格划分精度,清晰表达空间对象之间的关系,实现系统设计;最后,利用仿真对照实验,测试该系统性能。实验结果表明,虚拟现实技术的应用,能够减少用户的视觉混乱,简化注视轨迹,实现地理信息的快速查找,使用户体验得到优化。

When users use the conventional 3D visualization system of geographic information,they cannot find the needed geographic information accurately and intuitively because of the complexity of their gaze track and the confusion of scanning path.To solve this problem,a 3D visualization system of geographic information based on virtual reality is proposed.Based on the original hardware structure,S3C2440A microprocessor is selected to optimize the mode switching function of the circuit power supply,the virtual reality technology is used to analyze the spatial visibility,digital elevation model is used to generate three-dimensional surface,and terrain segmentation is adopted to improve the accuracy of grid division and clearly express the spatial objects Relationship,realize the design of 3D visualization system of geographic information based on virtual reality.The performance of the system is tested by the simulation contrast experiment.The experimental results show that the application of virtual reality technology can reduce the visual confusion of users,simplify the gaze track,realize the rapid search of geographic information,and optimize the user experience.