[Radiance-general] Lighting from a light probe

[Santiago Torres]

Hi Tarik,
I`ve never used a mirror sphere, but have mapped to source. You have to look
that the .cal file corresponds to the kind of light probe you are using
(i.e. that the directions are transated correctly into pixel coordinates)
I think Debevec uses at least two kind of light probes, cubic and spherical.
Maybe that`s the problem?
HTH,

Santiago




> -----Original Message-----
> From: radiance-general-bounces at radiance-online.org
> [mailto:radiance-general-bounces at radiance-online.org]On Behalf Of
> Tarik Rahman
> Sent: Friday, January 28, 2005 1:19 AM
> To: Radiance general discussion
> Subject: [Radiance-general] Lighting from a light probe
>
>
> Hi
> I'm trying to light a room with the light that's irradiated onto
> a mirror sphere
> in order to insert synthetic objects into the room. In radiance I
> take a close
> up .pic of the mirror sphere and convert it to a light probe
> using HDRShop. Do
> I use same code as in Debevec's tutorial, you know
> void colorpict hdr_env
> 7 red green blue lp_smallMirr.hdr angmap.cal sb_u sb_v
> 0
> 0
>
> hdr_env glow env_glow
> 0
> 0
> 4 1 1 1 0
>
> !genbox env_glow room 50 30 50 -i | -t 2.5 2.85 2.5
>
> for the lighting? Will angmap.cal work for any light probe or do
> I have to write
> my own because when I render this, the reflections from the light
> probe aren't
> mapped onto the walls of the room properly?
>
> Thanks for any help
>
> Tarik
>
>
> --
> Tarik Rahman
> PhD student, Institute of Perception, Action and Behaviour
> School of Informatics
> University of Edinburgh
>
> _______________________________________________
> Radiance-general mailing list
> Radiance-general at radiance-online.org
> http://www.radiance-online.org/mailman/listinfo/radiance-general
>
>