Print Email Facebook Twitter Applying Visual Analytics to Physically Based Rendering Title Applying Visual Analytics to Physically Based Rendering Author Simons, Gerard (External organisation) Herholz, Sebastian (Eberhard Karls Universität Tübingen) Petitjean, V.J.P. (TU Delft Computer Graphics and Visualisation) Rapp, Tobias (Karlsruhe Institut für Technologie) Ament, Marco (Karlsruhe Institut für Technologie) Lensch, Hendrick (Eberhard Karls Universität Tübingen) Dachsbacher, Carsten (Karlsruhe Institut für Technologie) Eisemann, M. (TH Köln) Eisemann, E. (TU Delft Computer Graphics and Visualisation) Date 2018 Abstract Physically based rendering is a well-understood technique to produce realistic-looking images. However, different algorithms exist for efficiency reasons, which work well in certain cases but fail or produce rendering artefacts in others. Few tools allow a user to gain insight into the algorithmic processes. In this work, we present such a tool, which combines techniques from information visualization and visual analytics with physically based rendering. It consists of an interactive parallel coordinates plot, with a built-in sampling-based data reduction technique to visualize the attributes associated with each light sample. Twodimensional (2D) and three-dimensional (3D) heat maps depict any desired property of the rendering process. An interactively rendered 3D view of the scene displays animated light paths based on the user’s selection to gain further insight into the rendering process. The provided interactivity enables the user to guide the rendering process for more efficiency. To show its usefulness, we present several applications based on our tool. This includes differential light transport visualization to optimize light setup in a scene, finding the causes of and resolving rendering artefacts, such as fireflies, as well as a path length contribution histogram to evaluate the efficiency of different Monte Carlo estimators. Subject global illuminationrenderingvisual analyticsvisualization To reference this document use: http://resolver.tudelft.nl/uuid:9d36f9f0-87aa-480b-9f2d-9ae7304f34f6 DOI https://doi.org/10.1111/cgf.13452 ISSN 1467-8659 Source Computer Graphics Forum (online), 1-12 Part of collection Institutional Repository Document type journal article Rights © 2018 Gerard Simons, Sebastian Herholz, V.J.P. Petitjean, Tobias Rapp, Marco Ament, Hendrick Lensch, Carsten Dachsbacher, M. Eisemann, E. Eisemann Files PDF 45663172_Simons_et_al_201 ... _Forum.pdf 20.57 MB Close viewer /islandora/object/uuid:9d36f9f0-87aa-480b-9f2d-9ae7304f34f6/datastream/OBJ/view