Extension of validity calculation to moving objects within a virtual reality system using frame to frame coherence

Generating pictures of a complex scene in real-time with constant Frame rates still overwhelms modern rendering systems. The exploitation of frame to frame coherence proposes a solution to this problem by reusing the images of rendered objects multiple times. Combining this with a cost-metric and a LOD-system delivers; d uniform frame rate system with less additional effort. The fundament of reusing images is a validity calculation, deciding in how far the original and the image might differ. The application is restricted to fixed objects respectively fixed spaces. This paper presents extensions for existing validity calculation to handle moving objects, which e.g. are now standard in the virtual reality description language VRML 2.0. The additional deviation resulting from object movement is estimated together with viewpoint movement.