Illumination from Curved Reflectors
Pat Hanrahan and
Don Mitchell.
Computer Graphics (Proc. SIGGRAPH 1992), July 1992
Abstract
A technique is presented to compute the reflected illumination from curved
mirror surfaces onto other surfaces. In accordance with Fermat's
principle, this is equivalent to finding extremal paths from the light
source to the visible surface via the mirrors. Once pathways of
illumination are found, irradiance is computed from the Gaussian curvature
of the geometrical wavefront. Techniques from optics, differential
geometry and interval analysis are applied to solve these problems.
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