基于真实感的虚拟现实关键技术研究

Research on virtual reality key technologies based on true sense

为了兼顾虚拟现实仿真应用中的真实感和实时性,以便营造流畅且高逼真的模拟环境,对真实感实时绘制关键技术进行具体研究。选取多细节层次模型(LOD)作为研究对象,并采用三角形网格简化模型对地形生成算法进行处理,提高了渲染速度。此外,采用基于三维透视投影的可视化策略对LOD选择机制进行设计,增强了场景的真实感。使用Visual C++开发语言和OpenGL开发工具对设计的LOD模型进行实现。模拟结果显示,提出的方法绘制效率较好,能够达到比较理想的场景仿真效果。

In order to balance the realism and real-time performance in the virtual reality simulation application,and create a smooth and highly.realistic simulation environment,the realistic real-time drawing key technologies are studied in detail. The levels of detail(LOD)model is selected as the research object,and the triangular mesh simplified model is used to process the terrain generation algorithm, which can improve the rendering speed. The visualization strategy based on 3D perspective projection is used to design the LOD selection mechanism to enhance the reality of the scene. The designed LOD model was implemented by using Visual C++ development language and OpenGL development tool. The simulation results show that the proposed method has high drawing efficiency,and can reach the ideal scene simulation effects.