Photon‐driven Irradiance Cache

Brouillat, Jonathan; Gautron, Pascal; Bouatouch, Kadi

doi:10.1111/j.1467-8659.2008.01346.x

Cited by 6 publications

(3 citation statements)

References 20 publications

(38 reference statements)

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“…According to the authors, one of the key advantages of their method is the straightforward implementation into any existing renderer. Brouillat et al [20] introduce the combination of photon mapping and irradiance caching. More specifically, their approach computes an irradiance cache from a photon map.…”

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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“…This process is a one-time, per-scene precomputation step. The selection of indirect diffuse sample points in this work is based on Bikker et al [6], who use a method similar to Brouillat et al [7] where light tracing is employed to place a number of dart sources in the scene. A dart throwing technique is then applied, using these sources, to trace and record points on the surface of scene geometry.…”

Section: Generation Of Diffuse Indirect Sample Point Setmentioning

confidence: 99%

An asynchronous method for cloud-based rendering

2018

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Interactive high-fidelity rendering is still unachievable on many consumer devices. Cloud gaming services have shown promise in delivering interactive graphics beyond the individual capabilities of user devices. However, a number of shortcomings are manifest in these systems: high network bandwidths are required for higher resolutions and input lag due to network fluctuations heavily disrupts user experience. In this paper we present a scalable solution for interactive high-fidelity graphics based on a distributed rendering pipeline where direct lighting is computed on the client device and indirect lighting in the cloud. The client device keeps a local cache for indirect lighting which is asynchronously updated using an object space representation; this allows us to achieve interactive rates that are unconstrained by network performance for a wide range of display resolutions that are also robust to input lag. Furthermore, in multi-user environments, the computation of indirect lighting is amortised over participating clients.

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“…Tabellion and Lamorlette [TL04] use irradiance caching combined with an approximate lighting model in cinematic lighting. Brouillat et al [BGB08] propose to use a photon map [Jen01] for fast construction of a coarse approximation of irradiance cache. Arikan et al [AFO05] speed up irradiance caching by decomposing illumination into near and distant terms.…”

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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Photon‐driven Irradiance Cache

Abstract: Abstract

Cited by 6 publications

References 20 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

An asynchronous method for cloud-based rendering

Spatial Directional Radiance Caching

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