A ray tracing solution for diffuse interreflection

Ward, Greg; Rubinstein, Francis; Clear, Robert

doi:10.1145/54852.378490

Cited by 169 publications

(131 citation statements)

References 13 publications

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“…Irradiance caching [66], originally implemented in Radiance, can be considered as a high-quality biased but consistent acceleration technique for computing diffuse indirect illumination component and it is widely used in many ray tracing engines and hybrid methods such as photon mapping. Its main advantage is that it incorporates the beneficial properties of radiosity methods while retaining the generality of Monte Carlo approaches.…”

Section: Bias and Consistencymentioning

confidence: 99%

State-of-the-art review of solar design tools and methods for assessing daylighting and solar potential for building-integrated photovoltaics

Jakica

2018

Renewable and Sustainable Energy Reviews

129

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Solar design can take many different forms across disciplines with different methodologies and goals, ranging from acquiring architectural visual effects to assessing illumination for daylighting and solar radiation potential on building surfaces for PV implementation. Furthermore, a capability of solar design methodologies and tools to accurately and time efficiently simulate light phenomena can greatly influence performance results and design decisions. This is especially important in complex cases such as dense urban settings with the significant surface shadowing, and vertical facades including daylighting devices and photovoltaics. Consequently, choosing a suitable approach and tool for each design phase is essential for achieving unique design and performance goals. This paper was carried out within the framework of IEA-PVPS Task 15 -BIPV and it aims to facilitate this decision for all parties involved in solar design process. Here presented, is an overview of almost 200 solar design tools, analyzing their numerous features regarding accuracy, complexity, scale, computation speed, representation as well as building design process integration in about 50 2D/3D, CAD/CAM and BIM software environments. Furthermore, tools from various fields have been analysed in a broad interdisciplinary context of solar design with a particular attention for being used for Daylighting and Building-Integrated Photovoltaics (BIPV) purposes. This approach should open many new perspectives on a potentially wider multidisciplinary usage and interpretation of solar design tools, sometimes well beyond their initial scope of work.

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Section: Bias and Consistencymentioning

confidence: 99%

State-of-the-art review of solar design tools and methods for assessing daylighting and solar potential for building-integrated photovoltaics

Jakica

2018

Renewable and Sustainable Energy Reviews

129

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“…Ward et al [War88] realized back in 1988 that indirect diffuse reflection is generally a continuous smooth function over space, not affected by the high frequency changes common with specular reflections. They proposed accelerating the computation of indirect diffuse reflections by densely sampling the hemisphere at a sparse set of shading points only and interpolating for the remaining ones.…”

Section: Irradiance Caching (Box)mentioning

confidence: 99%

“…The IC is an acceleration data structure which caches indirect diffuse irradiance samples, within the framework of a distributed ray-tracing algorithm [War88]. Irradiance values can then be interpolated for regions within a given neighborhood of these samples, thus reducing rendering time by exploiting spatial coherence.…”

Section: Related Workmentioning

confidence: 99%

“…Indirect diffuse interreflections, however, require dense sampling of the hemisphere at each shading point, dramatically increasing rendering times. Ward et al [War88] exploited the fact that the indirect diffuse component is generally a continuous smooth function over space not affected by the high frequency changes common with the specular component. They proposed the IC data structure to allow sparse evaluation of indirect diffuse irradiance.…”

Section: Introductionmentioning

confidence: 99%

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Wait-Free Shared-Memory Irradiance Caching

Debattista

Dubla

Santos

et al. 2011

IEEE Comput. Grap. Appl.

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“…Alternative methods to radiosity exist for modeling indirect lighting such as irradiance caching, which progressively samples and interpolates scene irradiance values [34,35,36]. A more complete summary of recent advances for both interactive and offline global illumination can be found in [37].…”

Section: Computer Graphics Research On Global Illumination Simulationsmentioning

confidence: 99%

Interactive selection of optimal fenestration materials for schematic architectural daylighting design

Cutler

Sheng

Martin

et al. 2008

Automation in Construction

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Complex fenestration systems, such as prismatic and laser cut panels, are emerging as attractive options in architectural design thanks to their high potential to assist in energy and comfort issues. These systems can be used to redirect intense illumination from the sun but have complex transmissive properties that in turn depend on continuously changing illumination conditions due to the dynamic nature of natural light. The resulting non-intuitive interactions with the built environment make it necessary to develop tools that adequately represent these systems' behavior to the architect. The method presented in this paper enables simulation of the direct and indirect illumination from the sun and sky throughout each day for different months of the year. The user can interactively explore the high-dimensional configuration space to select optimal materials early in the design process, using both qualitative and quantitative design criteria to make adjustments.

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A ray tracing solution for diffuse interreflection

Cited by 169 publications

References 13 publications

State-of-the-art review of solar design tools and methods for assessing daylighting and solar potential for building-integrated photovoltaics

State-of-the-art review of solar design tools and methods for assessing daylighting and solar potential for building-integrated photovoltaics

Wait-Free Shared-Memory Irradiance Caching

Interactive selection of optimal fenestration materials for schematic architectural daylighting design

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