Research And Application Of Some VR Key Techniques In Virtual Campus

Based on the rapid development of computer graphics and many disciplines involved, virtual reality (VR) becomes one of the most watched technique in the twenty-first century. VR technology has been applied to a variety of areas, with great potential. Virtual campus is a good example in the education sector of application. Northeastern University (NEU) has also started its own development in virtual campus, and has achieved some good results.Targeted at improving the walk-through system in the current version of VR campus of NEU, real-time simulation and interactive control functions are established and new 3D models are developed. The contributions and other related research work are summarized as follows:First, based on the comprehensive research regarding virtual reality technology and virtual walk-through technology, a few new functional design topics are proposed for the system.Second, using the sophisticated Multigen Creator program, some of the key points in the 3D modeling facilities are investigated and based on the reasonable procedures,3D model of the new Northeastern University administrative building and its surrounding areas are established.Third, the existing walk-through platform developed with Vega has been studied thoroughly and the new walk-though strategies on keyboard and fixed routes are proposed and implemented. Viewpoint.control and transformation in the course of walk-through process are studied and enabled. The key points such as collision detection, particle system are analyzed and dynamic insertion and deletion of models of sub-models are enabled with Datasets.Finally, the Human-in-VR technique is discussed and studied, and modeling and movement analysis of virtual human are also established. Mathematical description of walking process of virtual human model is performed with inverse kinematics. Using the existing Vega API functions, the control of a single degree of freedom (DOF) node model is established, which makes it possible to consider multi-DOF problems. With the DI-Guy software, the virtual human facilities has been embedded in the virtual campus system.