Research On Information Integration In Scene Wandering And Interaction Based On Digital Map

Virtual wandering is an important application of virtual reality technology, by real-time interaction it allows users to freely observe and experience the virtual environment,to get the immersion and realism like in the real world. However, in the Virtual wandering it is also very prone to get lost just like in the real world. Dynamic response of Virtual scene and 2D digital map not only let the user experience the direction and position at the macro,and find the target quickly and easily, while virtual scene can make up for the deficiencies of users percepting the environment by 2D map. It has been an important issue that how to effectively build the 2D navigation digital map of the three-dimensional virtual scene and the dynamic response between 2D and 3D.Targeted the science and technology museum in general, this thesis commence the study on the interaction and information integration between the 3D virtual scene and 2D digital map, which focuses on the design of 2D navigation digital map,and the Dynamic Response technology between 2D and 3D.Firstly, this paper deeply analysises the modeling methods and the tools of virtual scene, and gives a structure of 3D virtual wandering system which supports the interaction between virtual scene and 2D digital map, and description on scene construction,2D digital map design,2D and 3D dynamic response, realistic rendering of virtual scenes and so on.Secondly, based on the MapInfo digital map development platform,a way of establishing 2D navigation map of the virtual wandering is presented. The perspective projection is used to obtain plan scene of 3D scene and throuhg MapInfo geographical data is added and expanded. The dynamic response between 2D digital map and 3D VR is supported by building mapping relation between planar region and 3D scene coordinates. Finally, dynamic response of 2D digital map and 3D virtual scene is researched deeply.This paper analysises the basic principles of dynamic response,designs the process,ang gives the solution of the key issues.