期刊
COMPUTER GRAPHICS FORUM
卷 37, 期 6, 页码 96-105出版社
WILEY
DOI: 10.1111/cgf.13314
关键词
global illumination; rendering; ray tracing; rendering
资金
- DARPA (project REVEAL)
- European Research Council (Consolidator Grant, project CHAMELEON)
- Spanish Ministerio de Economia y Competitividad [TIN2016-78753-P, TIN2014-61696-EXP]
On the foundations of many rendering algorithms it is the symmetry between the path traversed by light and its adjoint path starting from the camera. However, several effects, including polarization or fluorescence, break that symmetry, and are defined only on the direction of light propagation. This reduces the applicability of bidirectional methods that exploit this symmetry for simulating effectively light transport. In this work, we focus on how to include these non-symmetric effects within a bidirectional rendering algorithm. We generalize the path integral to support the constraints imposed by non-symmetric light transport. Based on this theoretical framework, we propose modifications on two bidirectional methods, namely bidirectional path tracing and photon mapping, extending them to support polarization and fluorescence, in both steady and transient state.
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