To solve the problem that the present of large group per formance is usually inconsistent with the expected, we used large-scale crowed simulation technology to simulate perfor mances of actors, and used level of detail rendering, image-based rendering, pre-rendering lighting, and geometry instancing to make an efficient rendering of the performance. As an application we implemented a digital perforance simulation system which was developed based on Virtools. The system simulated the whole process large group performance, and the results of creativity could be intuitive understood by creative designer in the initial time. EX perimental results show that the digital performance simulation system could provide convenience for creative designer to make creativity scheduling and preview, effects of creativity, and it makes the arts creativity be showed perfectly in large group performance possible.%为了解决大型团体表演中创意预期与创意效果呈现不一致的问题,采用大规模人群仿真技术实现了表演过程中演员行为的仿真,采用层次细节绘制、基于图像绘制、预渲染光影以及几何体实例化等方法实现了表演场面的高效绘制.实现了一个以虚拟现实平台Virtools为载载体的数字表演仿真系统,该系统对大型团体表演的整个过程进行了仿真,使编创人员在创意初期就能对创意的呈现结果有直观认识.实验结果表明,该系统为大型团体表演编创人员进行创意编排、创意效果预览提供方便, 为艺术创意完美展现于大型团体表演中提供了可能.
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