The Implementation Of Virtual Training System With Stereo Vision

With the development of the technology about information and computer, virtual reality technology has become one of the important hot spots to be studied and developed in the field of current information. More and more attentions are obtained for the key technologies' study and application about virtual reality technology, which is widely applied in domains of national defense, industry, economy, agriculture, education training, medical service and so on.The application of key technologies about virtual reality in the virtual training simulation systems is studied in this paper, and a virtual training environment is developed according to the scene examples, which has high reality and powerful utility. A realistic and various training scene is provided for the virtual training of complex equipments. The main study contents are divided into two parts:1) The construction of model database,Key technologies of the three-dimensional modeling and optimizing are elaborated in detail according to the characters of modeling. The methods of modeling particular objects which are complex and abnormal are analyzed based on the geometry characteristics of the objects, then the scene models are constructed realistically, which provide data foundations for the virtual scene.2) The production of virtual scene and the system modules'design and realizing.The scene data structure is organized effectively and reasonably through analyzing the scene theory, The scene driving program frame,which is based on MFC+OSG with double process, is designed by the open-source graphic engine OpenSceneGraph(OSG), the virtual scene is imported rapidly, which provides an realistic and reasonable virtual scene. Some basic function modules of the system are designed and realized in this platform, including the environment special effect module, the roaming module, the collision testing module, the three-dimensional sound effect module, the operation simulation module and the multi-windows designing module, etc. The stereo display module is developed importantly, the principle of stereo display is introduced through comparison of stereo display programs, the passive form stereo projection program which is used for joining by many people is designed alone, and the high stereo vision effect is realized through the software programming.The results of the simulation show that the basic functions of the prototype system are universal, which can be transplanted from one system to another. The reality and usability of virtual training is strengthened from hearing and vision.