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With HDR I always have the problem that the light rays spread to much from the
picture. One of the results then is: No hard, sharp shadows...
If you would make an HDR picture with a chrome-ball from a sunny light
situation, casting sharp and hard shadows, you won't get a shadow like this in
your rendering.
So I decided to convert an HDR picture back into light sources that contains the
right color and intensity coming from the picture.
This picture contains 192 light sources as a hemisphere.
After playing with a view different HDRs, I decided to use one without a sharp
shadow - it was looking good.
Maybe some other day...
Holger :)
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>H. Karsten on date 28/05/2010 05:57 wrote:
> With HDR I always have the problem that the light rays spread to much from the
> picture. One of the results then is: No hard, sharp shadows...
>
> If you would make an HDR picture with a chrome-ball from a sunny light
> situation, casting sharp and hard shadows, you won't get a shadow like this in
> your rendering.
>
> So I decided to convert an HDR picture back into light sources that contains the
> right color and intensity coming from the picture.
>
> This picture contains 192 light sources as a hemisphere.
>
> After playing with a view different HDRs, I decided to use one without a sharp
> shadow - it was looking good.
>
> Maybe some other day...
>
> Holger :)
Nice.
Now it remembers me Starwars Empire Troops ;-)
Paolo
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Am 28.05.2010 05:57, schrieb H. Karsten:
> So I decided to convert an HDR picture back into light sources that contains the
> right color and intensity coming from the picture.
You may want to use the HDR picture nonetheless for reflections; in
POV-Ray 3.7 you can achieve this by using a large sphere with the
"no_radiosity" and "no_shadow" keywords and an ambient-only texture.
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"clipka" <ano### [at] anonymous org> schreef in bericht
news:4bffe2ae$1@news.povray.org...
> Am 28.05.2010 05:57, schrieb H. Karsten:
>
>> So I decided to convert an HDR picture back into light sources that
>> contains the
>> right color and intensity coming from the picture.
>
> You may want to use the HDR picture nonetheless for reflections; in
> POV-Ray 3.7 you can achieve this by using a large sphere with the
> "no_radiosity" and "no_shadow" keywords and an ambient-only texture.
Ah! That is something I have to try yet! :-)
Thanks for reminding me.
Thomas
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