Dynamic Scheduling and Real-Time Rendering for Large-Scale 3D Scenes
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3D visualization and real-time rendering of large-scale scenes is an important task of virtual reality. In this paper, different from local loading and roaming of the scenes, we focus on dynamic loading and real-time roaming, based on the remote servers and clients, to facilitate the efficient transmission and reduce the transmission time. More specifically, a novel dynamic scheduling algorithm in the client side is used to optimize the loading and real-time rendering performance, i.e., this method can dynamically load and unload the partitioned data blocks from the server side according to the roaming viewpoints so that we can realize the infinite roaming of a large scale scene. In order to accommodate different networking scenarios, we also design a multi-resolution scheme for those server-stored scene blocks according to different communication channel conditions, so that the most suitable resolution scheme can be automatically chosen. As shown in the experiments, our method only requires a small amount of memory overhead, while efficiently realizes infinite roaming of the large city scenes.
KeywordsScene management Dynamic scheduling Block prediction Dynamic loading Real-time rendering
This paper is supported by the National High Technology Research and Development Program of China (863 Program) under Grant No.2013AA01A603, the National Nature Science Foundation of China (No.61373084) and the Innovation Program of Shanghai Municipal Education Commission (No.14YZ011).
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