Cornell University Program of Computer Graphics
Spatiotemporal sensistivity and visual attention for efficient rendering of dynamic environments.Hector Yee, Sumanta Pattanaik, and Donald P. Greenberg.
ACM Transactions on Graphics, 20(1), January 2001.
We present a method to accelerate global illumination computation in prerendered animations by taking advantage of limitations of the human visual system. A spatiotemporal error tolerance map, constructed from psychophysical data based on velocity dependent contrast sensitivity, is used to accelerate rendering. The error map is augmented by a model of visual attention in order to account for the tracking behavior of the eye. Perceptual acceleration combined with good sampling protocols provide a global illumination solution feasible for use in animation. Results indicate an order of magnitude improvement in computational speed.
The Additional results are available online.
This paper is available as a PDF file YPG01.pdf (2.2M).