Document Type thesis Author Name Blanchette, Damon Arthur Email Address damonbla at gmail.com URN etd-011712-095412 Title Adaptive Spectral Mapping for Real-Time Dispersive Refraction Degree MS Department Computer Science Advisors Emmanuel Agu, Advisor Matt Ward, Reader Craig Wills, Department Head Keywords graphics real-time screen-space dispersion spectral rendering Date of Presentation/Defense 2011-12-08 Availability unrestricted
Spectral rendering, or the synthesis of images by taking into account the wavelengths of light, allows effects otherwise impossible with other methods. One of these effects is dispersion, the phenomenon that creates a rainbow when white light shines through a prism. Spectral rendering has previously remained in the realm of off-line rendering (with a few exceptions) due to the extensive computation required to keep track of individual light wavelengths. Caustics, the focusing and de-focusing of light through a refractive medium, can be interpreted as a special case of dispersion where all the wavelengths travel together. This thesis extends Adaptive Caustic Mapping, a previously proposed caustics mapping algorithm, to handle spectral dispersion. Because ACM can display caustics in real-time, it is quite amenable to be extended to handle the more general case of dispersion. A method is presented that runs in screen-space and is fast enough to display plausible dispersion phenomena in real-time at interactive frame rates.
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