Handling dynamic scenes

Even though ray tracing is a relatively old and well-understood technique, its use for interactive applications is still in its infancy. Several issues of interactive applications are all but fully solved. Especially the handling of dynamic scenes in an interactive context so far has received few attention by ray tracing researchers. Ray tracing research so far almost exclusively concentrated on accelerating the process of creating a single image, which could take from minutes to hours. Most of these approaches relied on doing extensive preprocessing by building up complex data structures to accelerate the process of tracing a ray.