[Radiance-general] difusse reflections

[Ignacio Munarriz]

from Jaroslav Křivánek
"Radiance Caching is a ray tracing-based method for accelerated global 
illumination computation in scenes with low-frequency glossy BRDFs. The 
method is based on sparse sampling, caching, and interpolating radiance 
on glossy surfaces. In particular we extend the irradiance caching 
scheme proposed by Ward et al. in 1988 to cache and interpolate 
directional incoming radiance instead of irradiance. The incoming 
radiance at a point is represented by a vector of coefficients with 
respect to a spherical or hemispherical basis."

oh yes, it's radiance caching, i must read more :-)

Greg Ward escribió:
> Hi Ignacio,
>
> I'm not sure of your question, but there has been work on what's 
> called "radiance caching" (as opposed to "irradiance caching") by 
> Pascal Gautron <http://www.irisa.fr/siames/Pascal.Gautron/> and 
> Jaroslav Křivánek <http://www.cgg.cvut.cz/members/xkrivanj/>, among 
> others.
>
> -Greg
>
>> From: Ignacio Munarriz <info at aisarquitectura.com>
>> Date: November 6, 2007 1:34:41 AM MST
>>
>> what dou you thing about using irradiance gradients with diffuse 
>> reflections? i've made a little hack in radiance code and obtained 
>> this www.aisarquitectura.com/archivos/romi.jpg , the flloor is 
>> defined as
>>    void metal suelo
>>     0
>>     0
>>     5  .8  .8  .8  .9  0.3
>>
>> i think i've missed something because the fllor is too dark, but it`s 
>> enough to see the effect
>
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