3D virtual city rendering and real-time interaction based on UC-win/Road

This paper researches on many kinds of 3D model data and city image data, based on the 3D virtual platform of UC-win/Road, to realize the 3D visualization of urban areas, interacting on real time, and rendering with the autonomous demo in many ways. We propose to utilize open access large-scale high-definition images based on Google Earth to realize seamless splice and coordinate matching in the platform. Moreover 3D terrain is then generated by using terrain patches to deal with elevation. For urban construction, infrastructure, trees and other common 3D models, we perform 3D model reconstruction by accessing massive model data resources from open 3D Warehouse. Based on the platform of UC-win/Road, the reconstructed 3D models can be saved and recalled models with large quantities of city auxiliary models being generated for these 3D scenes. Our system can construct urban lakes and rivers, and generate rain, snow, fog and other typical weather phenomena dynamically. Moreover, a variety of ways can be chosen, based on scripting, to realize roam and real-time interaction, and build automatic playback system, while outputting recorded video files.