@inproceedings{RothWeierBauszatetal.2019,
  author    = {Thorsten Roth and Martin Weier and Pablo Bauszat and Andr{\´e} Hinkenjann and Yongmin Li},
  title     = {Hash-based Hierarchical Caching for Interactive Previews in Global Illumination Rendering},
  series = {Tam, Roberts (Eds.): Computer Graphics and Visual Computing (CGVC 2019)},
  publisher = {The Eurographics Association},
  isbn      = {978-3-03868-096-3},
  doi       = {10.2312/cgvc.20191261},
  pages     = {85 -- 93},
  year      = {2019},
  abstract  = {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 ofstatic 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.},
  language  = {en}
}