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http://bura.brunel.ac.uk/handle/2438/24874
Title: | Hash-based hierarchical caching and layered filtering for interactive previews in global illumination rendering |
Authors: | Roth, T Weier, M Bauszat, P Hinkenjann, A Li, Y |
Keywords: | ray tracing;global illumination;level-of-detail;caching;rendering |
Issue Date: | 4-Mar-2020 |
Citation: | Roth, T. et al. (2020) 'Hash-based hierarchical caching and layered filtering for interactive previews in global illumination rendering', Computers, 9 (1), pp. 1 - 25. doi: 10.3390/computers9010017. |
Abstract: | Copyright © 2020 by the authors. Modern Monte-Carlo-based rendering systems still suffer from the computational complexity involved in the generation of noise-free images, making it challenging to synthesize interactive previews. We present a framework suited for rendering such previews of static scenes using a caching technique that builds upon a linkless octree. Our approach allows for memory-efficient storage and constant-time lookup to cache diffuse illumination at multiple hitpoints along the traced paths. Non-diffuse surfaces are dealt with in a hybrid way in order to reconstruct view-dependent illumination while maintaining interactive frame rates. By evaluating the visual fidelity against ground truth sequences and by benchmarking, we show that our approach compares well to low-noise path-traced results, but with a greatly reduced computational complexity, allowing for interactive frame rates. This way, our caching technique provides a useful tool for global illumination previews and multi-view rendering. |
URI: | https://bura.brunel.ac.uk/handle/2438/24874 |
DOI: | https://doi.org/10.3390/computers9010017 |
Other Identifiers: | 17 ORCID iDs: Yongmin Li https://orcid.org/0000-0003-1668-2440 |
Appears in Collections: | Dept of Computer Science Research Papers |
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