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Virtual Dictionary

Progressive Radiosity

Progressive Radiosity is a form of lighting. It like all forms of radiosity, is used to determine he amount of light reaching a surface that is actually reflected off of other surfaces. It is termed progressive, because it conquers radiosity in stages. Rather than attempting to determine all reflections in a scene all at once, the whole scene is processed assuming only one level of reflection, and surfaces that are likely to reflect again, are noted.

Then the scene is processed again, filling in these secondary reflection sources, and tertiary are noted. The scene is then processed again and again until no more sources are present, the reflected light has fallen below a given threshold, or a set number of clock cycles are used up.

In this manner, the diffusion in lighting is laid down progressively (hence the name), to give a soft effect, in as few calculations as possible.

See Also: Raytracing, Raycasting, Radiosity, Caustics

Below, we offer a selection of links from our resource databases which may match this term.

Related Dictionary Entries for Progressive Radiosity:

Direct Light

Indirect Light


Physically Based Rendering

Progressive Radiosity


Resources in our database matching the Term Progressive Radiosity:

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Locally Hosted resource
Virtual Environment business meetings a reality - commonplace by 2010
A short, previous news snippet, from 24/09/2003, looking at the increasing uptake in VR used for high-level business meetings. A progressive trend indeed.

Linked resource
Hemisphere Lighting With Radiosity Maps
Rendering of lighting in outdoor scenes is a paramount concern. To truly be realistic, the light levels constantly vary, and the sun (or suns) are not usually even the primary lightsource! All that adds up to is a computational disaster, unless some way is found to render lightsoure data quickly, and easilly....


Industry News containing the Term Progressive Radiosity:

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In a moving tale showcasting the true power of brain-machine interfaces, a 41 year old Japanese man, paralysed with a progressive muscle disease, and not far off becoming a quadriplegic, has taken a stroll in second life.


A Scottish magazine once ran a headline above an article on former Paralympics track star Aimee Mullins that read, "Can You See Anything Wrong With This Woman? No? Her Either."

Aimee Mullins, 33, had both legs amputated ju...

Califgornia, occasional American state of progressive change, is starting to see a project come together to make electric vehicles ubiquitous on the streets.

California Gov. Schwarzenegger is joining forces with a number of B...

US company PixelOptics has invented electronic spectacles that can automatically change focus as you lower your head to read a book, and could spell the end of the bifocal.

The product, called emPower!?, has been under develo...

(Press Release) LightWork Design, supplier of rendering solutions for developers of advanced 3D computer graphics software, are pleased to announce that Fukui Computer Inc has expanded the LightWorks functionality integrated within their AR...