Schertler, NicoSalm, MirkoStaib, JoachimGumhold, StefanKarsten Rink and Ariane Middel and Dirk Zeckzer2016-06-092016-06-092016978-3-03868-018-5-https://doi.org/10.2312/envirvis.20161106https://diglib.eg.org:443/handle/103D scans of caves are acquired for virtual exploration, quantitative analysis, and communication purposes. Especially when presented to a non-professional audience, near realistic visualization is important because it improves acceptance and familiarity. A major part of realistic visualizations is the reasonable simulation of light transport, including global effects such as diffuse inter-reflections. In this paper, we present a direct visualization method for cave data that are represented as unstructured point clouds. Global light transport is approximated with a volumetric scene representation. Using hierarchical data structures, our system achieves interactive frame rates.I.3.3 [Computer Graphics]Picture/Image GenerationDisplay Algorithms10.2312/envirvis.2016110641-45