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CW 416
Olivier Dumont, Philip Dutré
Light transport analysis and rendering
Abstract
In this paper we present a technique for image synthesis that partitions the total light transport reaching the camera into rendering components. A partition based on light path types and a separation of the image is used as the basis for these components. This allows for a locally adaptive rendering of lighting effects.
An importance heuristic is subsequently defined on each of these rendering components, based on estimates of the light transport reaching the image plane. These estimates are constructed from coarse light information and stabilized using a grouping into subregions of the rendering components.
Algorithms that exploit the explicit partition of the total light transport reaching the camera are presented. We propose an algorithm to render the complete light transport which delivers intermediary perceptually noiseless results. Another algorithm that renders all light transport effects in a limited time, by substituting approximations for certain components, is introduced as well.
report.pdf ( 15M) / mailto: O. Dumont