Paper Info
Title
Illumination‐driven Mesh Reduction for Accelerating Light Transport Simulations
Abstract
Progressive light transport simulations aspire a physically-based, consistent rendering to obtain visually appealing illumination effects, depth and realism. Thereby, the handling of large scenes is a difficult problem, as in typical scene subdivision approaches the parallel processing requires frequent synchronization due to the bouncing of light throughout the scene. In practice, however, only few object parts noticeably contribute to the radiance observable in the image, whereas large areas play only a minor role. In fact, a mesh simplification of the latter can go unnoticed by the human eye. This particular importance to the visible radiance in the image calls for an output-sensitive mesh reduction that allows to render originally out-of-core scenes on a single machine without swapping of memory. Thus, in this paper, we present a preprocessing step that reduces the scene size under the constraint of radiance preservation with focus on high-frequency effects such as caustics. For this, we perform a small number of preliminary light transport simulation iterations. Thereby, we identify mesh parts that contribute significantly to the visible radiance in the scene, and which we thus preserve during mesh reduction.
Year
DOI
Venue
2015
10.1111/cgf.12688
COMPUTER GRAPHICS FORUM
Keywords
Field
DocType
Categories and Subject Descriptors (according to ACM CCS),I,3,7 [Computer Graphics]: Computer GraphicsThree-Dimensional Graphics and RealismRay tracing
Computer vision,Computer graphics (images),Ray tracing (graphics),Computer science,T-vertices,Real-time computer graphics,Artificial intelligence,Image-based modeling and rendering,Rendering (computer graphics),Computer graphics,Radiance,Rendering equation
Journal
Volume
Issue
ISSN
34.0
4.0
0167-7055
Citations 
PageRank 
References 
0
0.34
25
Authors
3
Name
Order
Citations
PageRank
Andreas Reich100.34
Tobias Günther2358.34
Thorsten Grosch348724.79