A Multi-pass Method for Accelerated Spectral Sampling

Ruit, Mark van de; Eisemann, Elmar

A Multi-pass Method for Accelerated Spectral Sampling

Files

v40i7pp141-148.pdf (13.51 MB)

Date

2021

Authors

Ruit, Mark van de
Eisemann, Elmar

Publisher

The Eurographics Association and John Wiley & Sons Ltd.

Abstract

Spectral Monte Carlo rendering can simulate advanced light phenomena, such as chromatic dispersion, but typically shows a slow convergence behavior. Properly sampling the spectral domain can be challenging in scenes with many complex spectral distributions. To this end, we propose a multi-pass approach. We build and store coarse screen-space estimates of incident spectral radiance and use these to then importance sample the spectral domain. Hereby, we lower variance and reduce noise with little overhead. Our method handles challenging scenarios with difficult spectral distributions, many different emitters, and participating media. Finally, it can be integrated into existing spectral rendering methods for an additional acceleration.

        @article{10.1111:cgf.14408
,
journal = {Computer Graphics Forum},
title = {{A Multi-pass Method for Accelerated Spectral Sampling
}},
author = {Ruit, Mark van de and 
Eisemann, Elmar
},
year = {2021
},
publisher = {The Eurographics Association and John Wiley & Sons Ltd.
},
ISSN = {1467-8659
},
DOI = {10.1111/cgf.14408
}
}