阴影绘制算法的真实感和实时性之间的矛盾，是计算机图形学和虚拟现实技术目前所要解决的一个基本难题。
The contradiction between the realistic and real-time of the shadow rendering algorithm has been a fundamental and difficult problem in computer graphics and virtual reality technology.
网格简化是计算机图形学中一个传统的研究课题，它对网格的存储和传输处理以及实时绘制都有着重要的意义。
Mesh simplification is a classical research subject in computer graphics and is an very important significance for mesh storage, transmission process and real time render.
虚拟世界是由人工智能、计算机图形学、人机接口技术、传感器技术和高度并行的实时计算技术等集成起来所生成的模拟世界。
The virtual world is a simulated word that is composed of artificial intelligence, computer graphics, man-machine interaction technology, sensor technology, highly computerized technology.
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