David Luebke
University of Virginia
Benjamin Hallen
University of Virginia
Rendering Techniques, Ed. Steven Gortler and Karol Myszkowski, Springer-Verlag, London (June 2001).
Abstract
We present a framework for accelerating interactive rendering, grounded in
psychophysical models of visual perception. This framework is applicable to
multiresolution rendering techniques that use a hierarchy of local simplification
operations. Our method drives those local operations directly by perceptual metrics;
the effect of each simplification on the final image is considered in terms of the
contrast the operation will induce in the image and the spatial frequency of the
resulting change. A simple and conservative perceptual model determines under what
conditions the simplification operation will be perceptible, enabling imperceptible
simplification in which operations are performed only when judged imperceptible.
Alternatively, simplifications may be ordered according to their perceptibility,
providing a principled approach to best-effort rendering. We demonstrate this
framework applied to view-dependent polygonal simplification. Our approach
addresses many interesting topics in the acceleration of interactive rendering, including
imperceptible simplification, silhouette preservation, and gaze-directed rendering.
Paper
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