[comp.graphics] Radiosity- Thanks

rjc@churchy.gnu.ai.mit.edu (Ray Cromwell) (06/26/91)

    Thanks to everyone who replied about my radiosity question. I have
one last request. Can someone tell me where to ftp some radiosity 
rendered pictures (hopefully gif, even better would be IFF) so
I can see how much better a radiosity scene wuld look in comparision
to raytraced diffuse-light scenes.

   Also, wouldn't it be possible to combine ray-tracing and 
radiosity? Something like applying the radiosity technique after
specularity has been applied? 

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jet@karazm.math.uh.edu (J Eric Townsend) (06/26/91)

In article <1991Jun25.192708.19910@mintaka.lcs.mit.edu> rjc@churchy.gnu.ai.mit.edu (Ray Cromwell) writes:
>one last request. Can someone tell me where to ftp some radiosity 
>rendered pictures (hopefully gif, even better would be IFF) so

Take a look in any recent survey book on computer graphics.

>   Also, wouldn't it be possible to combine ray-tracing and 
>radiosity? Something like applying the radiosity technique after
>specularity has been applied? 

It's been done, but I don't have a reference handy.


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mark@calvin..westford.ccur.com (Mark Thompson) (06/28/91)

In article <1991Jun25.192708.19910@mintaka.lcs.mit.edu> rjc@churchy.gnu.ai.mit.edu (Ray Cromwell) writes:
>   Also, wouldn't it be possible to combine ray-tracing and 
>radiosity? Something like applying the radiosity technique after
>specularity has been applied? 

Yes, this has been done and there are many papers describing various
versions of this technique. Here are a few:

"A Two-Pass Solution to the Rendering Equation: A Synthesis of Ray Tracing
and Radiosity Methods" by John R. Wallace and Donald P. Greenburg
Siggraph '87 p.311-320

"A Ray Tracing Solution fo Diffuse Interreflection" by Greg J. Ward, Francis
M. Rubinstein, and Robert D. Clear.
Siggraph '88 p.85-92

"A General Two-Pass Method Integrating Specular and Diffuse Reflection"
by Francois Silion and Claude Puech
Siggraph '89 p.335-344

"Adaptive Radiosity Textures for Bidirectional Ray Tracing" by Paul S. Heckbert
Siggraph '90 p.145-154

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