Schwenk, Karsten and Kuijper, Arjan and Behr, Johannes and Fellner, Dieter W. (2012):
Practical Noise Reduction for Progressive Stochastic Ray Tracing with Perceptual Control.
In: IEEE Computer Graphics and Applications, 32 (6), pp. 46-55. DOI: 10.1109/MCG.2012.30,
[Article]
Abstract
A proposed method reduces noise in stochastic ray tracing for interactive progressive rendering. The method accumulates high-variance light paths in a separate buffer, which is filtered by a high-quality edge-preserving filter. Then, this method adds a combination of the noisy unfiltered samples and the less noisy (but biased) filtered samples to the low-variance samples to form the final image. A novel per-pixel blending operator combines both contributions in a way that respects a user-defined threshold on perceived noise. This method can provide fast, reliable previews, even in the presence of complex features such as specular surfaces and high-frequency textures. At the same time, it's consistent in that the bias due to filtering vanishes in the limit.
| Item Type: | Article |
|---|---|
| Erschienen: | 2012 |
| Creators: | Schwenk, Karsten and Kuijper, Arjan and Behr, Johannes and Fellner, Dieter W. |
| Title: | Practical Noise Reduction for Progressive Stochastic Ray Tracing with Perceptual Control |
| Language: | English |
| Abstract: | A proposed method reduces noise in stochastic ray tracing for interactive progressive rendering. The method accumulates high-variance light paths in a separate buffer, which is filtered by a high-quality edge-preserving filter. Then, this method adds a combination of the noisy unfiltered samples and the less noisy (but biased) filtered samples to the low-variance samples to form the final image. A novel per-pixel blending operator combines both contributions in a way that respects a user-defined threshold on perceived noise. This method can provide fast, reliable previews, even in the presence of complex features such as specular surfaces and high-frequency textures. At the same time, it's consistent in that the bias due to filtering vanishes in the limit. |
| Journal or Publication Title: | IEEE Computer Graphics and Applications |
| Journal volume: | 32 |
| Number: | 6 |
| Uncontrolled Keywords: | Business Field: Virtual engineering, Research Area: Confluence of graphics and vision, Forschungsgruppe Semantic Models, Immersive Systems (SMIS), Filtering, Ray tracing, Global illumination |
| Divisions: | 20 Department of Computer Science 20 Department of Computer Science > Interactive Graphics Systems |
| Date Deposited: | 12 Nov 2018 11:16 |
| DOI: | 10.1109/MCG.2012.30 |
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