Hash-Based Hierarchical Caching and Layered Filtering for Interactive Previews in Global Illumination Rendering
- 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.
Document Type: | Preprint |
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Language: | English |
Author: | Thorsten Roth, Martin Weier, Pablo Bauszat, André Hinkenjann, Yongmin Li |
Parent Title (English): | Preprints |
DOI: | https://doi.org/10.20944/preprints202001.0247.v1 |
Publisher: | MDPI |
Place of publication: | Basel |
Date of first publication: | 2020/01/22 |
Note: | peer-reviewed version of this preprint: Computers 2020, 9, 17 https://doi.org/10.3390/computers9010017 |
Keyword: | Filtering; Level-of-Detail; Rendering; caching; global illumination |
Departments, institutes and facilities: | Fachbereich Informatik |
Dewey Decimal Classification (DDC): | 0 Informatik, Informationswissenschaft, allgemeine Werke / 00 Informatik, Wissen, Systeme / 004 Datenverarbeitung; Informatik |
Entry in this database: | 2020/03/10 |
Licence (German): | Creative Commons - CC BY - Namensnennung 4.0 International |