The iray light transport simulation and rendering system

@article{Keller2017TheIL,
  title={The iray light transport simulation and rendering system},
  author={Alexander Keller and Carsten W{\"a}chter and Matthias Raab and Daniel Seibert and Dietger van Antwerpen and Johann Kornd{\"o}rfer and Lutz Kettner},
  journal={ACM SIGGRAPH 2017 Talks},
  year={2017}
}
While ray tracing has become increasingly common and path tracing is well understood by now, a major challenge consists of crafting an easy-to-use and efficient system implementing these technologies. Following a purely physically-based paradigm while still allowing for artistic workflows, the Iray light transport simulation and rendering system allows for rendering complex scenes by the push of a button and thus makes accurate light transport simulation widely available. We discuss the… Expand
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References

SHOWING 1-10 OF 55 REFERENCES
The RADIANCE lighting simulation and rendering system
  • G. Ward
  • Computer Science
  • SIGGRAPH
  • 1994
TLDR
A physically-based rendering system tailored to the demands of lighting design and architecture using a light-backwards ray-tracing method with extensions to efficiently solve the rendering equation under most conditions. Expand
Ray Tracing for Real-time Games
TLDR
It is shown that physically-based rendering will be feasible in real-time games within a few years, and that ray tracing leads to more realistic graphics, efficient game production, and elegant rendering software. Expand
Sorted Deferred Shading for Production Path Tracing
TLDR
A novel path‐tracing framework is introduced that sort large, potentially out‐of‐core ray batches to ensure coherence of ray traversal and defer shading of ray hits until they have been sorted, achieving perfectly coherent shading and avoiding the need for shading caches. Expand
Importance Driven Construction of Photon Maps
TLDR
A three pass solution for global illumination calculation extending the two pass approach proposed by Jensen is described, which combines particle tracing of importance with distributed ray tracing to create a global data structure called importance map. Expand
Mathematical Models and Monte Carlo Algorithms for Physically Based Rendering
Algorithms for image synthesis render photo-realistic imagery, given the description of a scene. Physically based rendering specifically stresses the physical correctness of the algorithms and theirExpand
Robust Monte Carlo methods for light transport simulation
TLDR
This dissertation develops new Monte Carlo techniques that greatly extend the range of input models for which light transport simulations are practical, and shows how light transport can be formulated as an integral over a space of paths. Expand
Adaptive radiosity textures for bidirectional ray tracing
TLDR
A rendering method designed to provide accurate, general simulation of global illumination for realistic image synthesis, using a three-pass, bidirectional ray tracing algorithm that traces rays from both the lights and the eye. Expand
An Improved Technique for Full Spectral Rendering
TLDR
An improved approach to full spectral rendering is presented, optimized for quasi-Monte Carlo ray tracing, however the underlying physical theory can be applied to any global illumination scheme. Expand
Physically Meaningful Rendering using Tristimulus Colours
TLDR
By comparing to spectral reference renderings, it is shown how rendering in tristimulus colour spaces introduces colour shifts in indirect light, violation of energy conservation, and unexpected behaviour in participating media. Expand
Quasi-Monte Carlo Image Synthesis in a Nutshell
TLDR
This self-contained tutorial surveys the state of the art in quasi-Monte Carlo rendering algorithms as used for image synthesis in the product design and movie industry and explains techniques to generate light transport paths to connect cameras and light sources. Expand
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