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.
虚拟植物生长是农业信息技术和计算机图形学领域中主要的研究课题之一。
Virtual plant growth is a significant research topic in the domain of agriculture information technology and computer graphics.
可见性裁减是计算机图形学的基本问题，也是虚拟现实引擎中的一个关键技术。
Visibility culling is a fundamental problem in computer graphics as well as a key technique in virtual reality engine.
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