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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.

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Metadaten
Document Type:Article
Language:English
Author:Thorsten Roth, Martin Weier, Pablo Bauszat, André Hinkenjann, Yongmin Li
Parent Title (English):Computers
Volume:9
Issue:1
First Page:17
ISSN:2073-431X
URN:urn:nbn:de:hbz:1044-opus-48359
DOI:https://doi.org/10.3390/computers9010017
Publisher:MDPI
Place of publication:Basel
Publishing Institution:Hochschule Bonn-Rhein-Sieg
Date of first publication:2020/03/04
Note:
This article belongs to the Special Issue Computer Graphics & Visual Computing (CGVC 2019).
Note:
© 2020 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution.
Departments, institutes and facilities:Fachbereich Informatik
Institute of Visual Computing (IVC)
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):License LogoCreative Commons - CC BY - Namensnennung 4.0 International