Rendermania>HDRI with Renderman

for Maya

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HDRI with RenderMan (BMRT)

 

 
What is a High Dynamic Range Radiance Imaging?
Computer graphics has long been concerned with recreating reality. To this end renderers have been developed to perform algorithms to emulate the way real light behaves. The most complex interaction happens at surfaces and is a combination of the surface properties (the BRDF - bi-directional reflection distribution function) and the nature of the light illuminating the surface (the luminance the surface recieves). To recreate this mathematically takes much computational time or artistic skill in setting up basic point lights and phong surfaces.

 

 

 

 

Where has HDRI been used? Besides Paul Debevec's excellent Fiat Lux animation, I have found two other instances of HDRI being used in commercial production. The first was a few scenes in X-men the movie where senator kelly is dying and becomes a pool of water. This was done using Houdini and there is a brief meantion of this on VFX PRo. Oliver James at CFC has also been using a simliar set up on the Guiness Dream Club advert involving several computer generated squirrels.

 

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©Rendermania-Simon Bunker