difusse reflections

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
     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

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 <[email protected]>
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
    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

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 :slight_smile:

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 <[email protected]>
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
    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

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general