Temporal Radiance Caching

Gautron, Pascal; Bouatouch, Kadi; Pattanaik, Sumanta

doi:10.1109/tvcg.2007.1061

Cited by 16 publications

(3 citation statements)

References 28 publications

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“…Moreover, they provide neither a level-of-detail mechanism nor a method to filter the results. A method for temporal radiance caching that supports glossy global illumination in animated environments is presented by Gautron et al [19]. Their approach is built upon irradiance and radiance caching, while sparse temporal sampling and interpolation of indirect lighting are employed to reuse the computed information in succeeding frames.…”

Section: Related Workmentioning

confidence: 99%

Hash-Based Hierarchical Caching and Layered Filtering for Interactive Previews in Global Illumination Rendering

et al. 2020

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Modern Monte-Carlo-based rendering systems still suffer from the computational complexity involved in the generation of noise-free images, making it challenging to synthesize interactive previews. We present a framework suited for rendering such previews of static scenes using a caching technique that builds upon a linkless octree. Our approach allows for memory-efficient storage and constant-time lookup to cache diffuse illumination at multiple hitpoints along the traced paths. Non-diffuse surfaces are dealt with in a hybrid way in order to reconstruct view-dependent illumination while maintaining interactive frame rates. By evaluating the visual fidelity against ground truth sequences and by benchmarking, we show that our approach compares well to low-noise path-traced results, but with a greatly reduced computational complexity, allowing for interactive frame rates. This way, our caching technique provides a useful tool for global illumination previews and multi-view rendering.

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Section: Related Workmentioning

confidence: 99%

Hash-Based Hierarchical Caching and Layered Filtering for Interactive Previews in Global Illumination Rendering

et al. 2020

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“…Other extensions of the (ir)radiance caching algorithms include the support for caching in dynamic environments [GBP07]. Instead of building (ir)radiance cache for each frame from scratch, they reuse and update existing records for several frames.…”

Section: Releated Workmentioning

confidence: 99%

Spatial Directional Radiance Caching

Gassenbauer

Křivánek

Bouatouch

2009

Computer Graphics Forum

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We present a new approach for accelerated global illumination computation in scenes with glossy surfaces. Our algorithm combines sparse illumination computation used in the radiance caching algorithm with BRDF importance sampling. To make this approach feasible, we extend the idea of lazy illumination evaluation, used in the caching approaches, from the spatial to the directional domain. Using importance sampling allows us to apply caching not only on low-gloss but also on shiny materials with high-frequency BRDFs, for which the radiance caching algorithm breaks down.

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“…Our algorithm does not require such an extra data structure because each sampled direction in every irradiance cache record is implicitly linked to a VPL, thus dispensing additional data structures. Gautron et al [GBP07] presented a temporal (ir)radiance cache that catered for changes in the temporal domain and included computation of a temporal gradient. Their method predicted incoming lighting and how it would affect the cached samples.…”

Section: Caching Schemesmentioning

confidence: 99%

Instant Caching for Interactive Global Illumination

Debattista

Dubla

Banterle

et al. 2009

Computer Graphics Forum

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The ability to interactively render dynamic scenes with global illumination is one of the main challenges in computer graphics. The improvement in performance of interactive ray tracing brought about by significant advances in hardware and careful exploitation of coherence has rendered the potential of interactive global illumination a reality. However, the simulation of complex light transport phenomena, such as diffuse interreflections, is still quite costly to compute in real time. In this paper we present a caching scheme, termed Instant Caching, based on a combination of irradiance caching and instant radiosity. By reutilising calculations from neighbouring computations this results in a speedup over previous instant radiosity-based approaches. Additionally, temporal coherence is exploited by identifying which computations have been invalidated due to geometric transformations and updating only those paths. The exploitation of spatial and temporal coherence allows us to achieve superior frame rates for interactive global illumination within dynamic scenes, without any precomputation or quality loss when compared to previous methods; handling of lighting and material changes are also demonstrated.

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Temporal Radiance Caching

Cited by 16 publications

References 28 publications

Hash-Based Hierarchical Caching and Layered Filtering for Interactive Previews in Global Illumination Rendering

Hash-Based Hierarchical Caching and Layered Filtering for Interactive Previews in Global Illumination Rendering

Spatial Directional Radiance Caching

Instant Caching for Interactive Global Illumination

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