Publication

Holistic Radiation Modelling with a Fast Simplified Radiosity Algorithm

Darren Robinson
2005
Conference Papers

Abstract

The radiant external environment may be described by two hemispheres, above and below the horizontal plane, which are discretised into patches of known solid angle. Occlusions to these patches may be combined and represented as some patch fraction for which the radiant characteristics are defined by the dominant occlusion. By solving for radiant exchanges between each surface in a scene and its associated (un)occluded patches, we have a simplified radiosity algorithm (SRA). This paper describes the application of t his SRA to solve for predictions of (i) solar radiation, (ii) interiordaylight and (iii) longwave radiation. Comparisons with a ray tracing program show that accurate results are achieved at a computational cost several orders of magnitude lower.

Official source

https://infoscience.epfl.ch/entities/publication/92c0b499-abdf-4b89-8eb9-8d7d135d3871

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Darren Robinson
2005
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/92c0b499-abdf-4b89-8eb9-8d7d135d3871

About this result

Related concepts (26)

3D rendering

3D rendering is the 3D computer graphics process of converting 3D models into 2D images on a computer. 3D renders may include photorealistic effects or non-photorealistic styles. Rendering is the final process of creating the actual 2D image or animation from the prepared scene. This can be compared to taking a photo or filming the scene after the setup is finished in real life. Several different, and often specialized, rendering methods have been developed.

Rendering (computer graphics)

Rendering or image synthesis is the process of generating a photorealistic or non-photorealistic image from a 2D or 3D model by means of a computer program. The resulting image is referred to as the render. Multiple models can be defined in a scene file containing objects in a strictly defined language or data structure. The scene file contains geometry, viewpoint, texture, lighting, and shading information describing the virtual scene. The data contained in the scene file is then passed to a rendering program to be processed and output to a or raster graphics image file.

Ray tracing (graphics)

In 3D computer graphics, ray tracing is a technique for modeling light transport for use in a wide variety of rendering algorithms for generating . On a spectrum of computational cost and visual fidelity, ray tracing-based rendering techniques, such as ray casting, recursive ray tracing, distribution ray tracing, photon mapping and path tracing, are generally slower and higher fidelity than scanline rendering methods.

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