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Tim Nikias wrote:
>
> Can photons be manipulated to appear brighter?
If you can somehow render just the photons with all materials
set to ambient 0 you can composite this image to an image without
photons in an image editor and adjust the photon brightness at will.
Use additive composite mode on non-gamma corrected images.
Oops! Another technique banned from IRTC :)
_____________
Kari Kivisalo
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On Thu, 09 May 2002 16:49:41 +0300, Kari Kivisalo <pro### [at] luxlab com>
wrote:
> Oops! Another technique banned from IRTC :)
persecutor ;)
ABX
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Hm. Thats a method to go by, thank you.
I'm still interested if there are possibilites to do that
in POV itself?
Kari Kivisalo wrote:
> Tim Nikias wrote:
> >
> > Can photons be manipulated to appear brighter?
>
> If you can somehow render just the photons with all materials
> set to ambient 0 you can composite this image to an image without
> photons in an image editor and adjust the photon brightness at will.
> Use additive composite mode on non-gamma corrected images.
>
> Oops! Another technique banned from IRTC :)
>
> _____________
> Kari Kivisalo
--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde
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On Thu, 09 May 2002 15:51:52 +0200, Tim Nikias <tim### [at] gmxde> wrote:
>Hm. Thats a method to go by, thank you.
>
>I'm still interested if there are possibilites to do that
>in POV itself?
I've never worked with photons yet but have you tried mix of
light_group, no_image and photons ? Just an idea.
ABX
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Tim Nikias wrote in message <3CDA7C28.BDD547C3@gmx.de>...
>Another question:
>
>Can photons be manipulated to appear brighter? I know that it
>would lead to non-realistic results, but thats what I'm after.
>
>What possibilities do I have? Load the photon-data several
>times (would kill my RAM with a 500MB Data-File), or is
>there another setting?
In my "Teardrop Prism" image, I needed to do exactly this. The way I did it
was to render the scene twice. The first rendering had all textures 5 times
brighter than normal. The photon data was saved using the "save_data"
setting. The second rendering had the textures at normal brightness, but
loaded the photon data from the brighter rendering.
--
Mark
The Universe is expanding.
The budget for its exploration is shrinking.
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On Thu, 09 May 2002 15:39:52 +0200, Tim Nikias <tim### [at] gmxde>
wrote:
>Can photons be manipulated to appear brighter? I know that it
>would lead to non-realistic results, but thats what I'm after.
Render with photons. Render without. Launch your image editor and
compose the difference of the two images. That's your photon data.
Brightness/contrast/gamma adjust it and mix it with the image without
photons. Voila.
Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG e-mail : pet### [at] tagpovrayorg
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Image editor??? Dont you know thats a taboo word/concept in here now? ;)
George Pantazopoulos
"Peter Popov" <pet### [at] vipbg> wrote in message
news:s35qduklqv63o51plhv30881lr04d5183n@4ax.com...
> On Thu, 09 May 2002 15:39:52 +0200, Tim Nikias <tim### [at] gmxde>
> wrote:
>
> >Can photons be manipulated to appear brighter? I know that it
> >would lead to non-realistic results, but thats what I'm after.
>
> Render with photons. Render without. Launch your image editor and
> compose the difference of the two images. That's your photon data.
> Brightness/contrast/gamma adjust it and mix it with the image without
> photons. Voila.
>
>
> Peter Popov ICQ : 15002700
> Personal e-mail : pet### [at] vipbg
> TAG e-mail : pet### [at] tagpovrayorg
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He. :) I agree. This method probably won't be good for IRTC.
And I'm one of those sick POV-Purists...
George Pantazopoulos wrote:
> Image editor??? Dont you know thats a taboo word/concept in here now? ;)
>
> George Pantazopoulos
>
--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde
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On Sat, 11 May 2002 17:38:13 +0200, Tim Nikias <tim### [at] gmxde>
wrote:
>He. :) I agree. This method probably won't be good for IRTC.
>
>And I'm one of those sick POV-Purists...
Them puritans!
Use POV to do it, then. Shouldn't be that hard now that we have image
based patterns and functions and so on. For me, that would be
inventing the wheel, but if you feel like it, why not :)
Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG e-mail : pet### [at] tagpovrayorg
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Hi :-)
It's very easy: set up the brightness of your lights, save photons, set
lights back and load saved photons....!
Thats the way i'm using to have brighter photons :-)
Paul
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