关键词：计算机图形渲染；基于物理；合成取代
摘 要：Computer graphics rendering is undergoing a renaissance, with physically-based rendering methods based on accurate Monte-Carlo image synthesis replacing ad-hoc techniques in a variety of applications including movie production. In interactive applications like product visualization or video games, physically-based lighting effects are increasingly popular. However, producing photo-realistic images at interactive speeds still remains a challenge.