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From: Andrew Cocker
Subject: Overexposed? Post Processing of POV images.
Date: 20 Apr 2002 15:19:31
Message: <3cc1bf43@news.povray.org>
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Does anybody know how I can achieve the 'overexposed' glow that occurs on
bright white areas of an image? Any tutorials you know of? I don't have
Photoshop, but I do have Paint Shop Pro 7. A batch processing solution would
be even better.
Thanks,
Andy Cocker
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You could just multiply the color of all your light sources and the
ambient_light value in the global_settings by however much you wanted to
overexpose.
--
- Slime
[ http://www.slimeland.com/ ]
[ http://www.slimeland.com/images/ ]
"Andrew Cocker" <big### [at] mariner9 fsnetcouk> wrote in message
news:3cc1bf43@news.povray.org...
> Does anybody know how I can achieve the 'overexposed' glow that occurs on
> bright white areas of an image? Any tutorials you know of? I don't have
> Photoshop, but I do have Paint Shop Pro 7. A batch processing solution
would
> be even better.
>
> Thanks,
> Andy Cocker
>
>
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From: Jan Walzer
Subject: Re: Overexposed? Post Processing of POV images.
Date: 20 Apr 2002 17:05:46
Message: <3cc1d82a@news.povray.org>
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I got some nice results the following way:
-Use your favourite layer-supporting paintprog
-duplicate the image in another layer
-set method of lighten-only
-use a gaussian-blur filter on the duplicated layer
-probably you have to adjust brightness/contrast
maybe it's better to adjust the brightness/contrast
before blurring, but you have to experiment a bit yourself ...
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From: Andrew Cocker
Subject: Re: Overexposed? Post Processing of POV images.
Date: 20 Apr 2002 18:26:40
Message: <3cc1eb20$1@news.povray.org>
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"Slime" <noo### [at] hotmailcom> wrote in message
news:3cc1cb2c$1@news.povray.org...
> You could just multiply the color of all your light sources and the
> ambient_light value in the global_settings by however much you wanted to
> overexpose.
Thanks. Will experiment.
Andy
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In Photoshop:
Duplicate layer as bloom. Use treshold or levels to clip
non-overexposed parts to black. Set layer mode to screen.
Gaussian blur. Adjust layer opacity and/or levels.
A variation of this can be used to get nice colored halos
to white or colored overexposed areas. Make a copy of bloom
layer and colorize it to dark saturated color, blur more.
Another copy is colorized lighter and different hue and less
saturated, blur less.
If PSP has macros this can be automated.
_____________
Kari Kivisalo
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From: Andrew Cocker
Subject: Re: Overexposed? Post Processing of POV images.
Date: 21 Apr 2002 10:05:50
Message: <3cc2c73e@news.povray.org>
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"Jan Walzer" <jan### [at] lzernet> wrote in message
news:3cc1d82a@news.povray.org...
> I got some nice results the following way:
>
> -Use your favourite layer-supporting paintprog
> -duplicate the image in another layer
> -set method of lighten-only
>
> -use a gaussian-blur filter on the duplicated layer
> -probably you have to adjust brightness/contrast
>
> maybe it's better to adjust the brightness/contrast
> before blurring, but you have to experiment a bit yourself ...
Thanks Jan, that works a treat.
Andy
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From: Andrew Cocker
Subject: Re: Overexposed? Post Processing of POV images.
Date: 21 Apr 2002 10:06:47
Message: <3cc2c777@news.povray.org>
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Thank you Kari.
Andy
"Kari Kivisalo" <pro### [at] luxlabcom> wrote in message
news:3CC2A932.32598DE7@luxlab.com...
>
> In Photoshop:
>
> Duplicate layer as bloom. Use treshold or levels to clip
> non-overexposed parts to black. Set layer mode to screen.
> Gaussian blur. Adjust layer opacity and/or levels.
>
> A variation of this can be used to get nice colored halos
> to white or colored overexposed areas. Make a copy of bloom
> layer and colorize it to dark saturated color, blur more.
> Another copy is colorized lighter and different hue and less
> saturated, blur less.
>
> If PSP has macros this can be automated.
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In article <3cc1bf43@news.povray.org>,
"Andrew Cocker" <big### [at] mariner9fsnetcouk> wrote:
> Does anybody know how I can achieve the 'overexposed' glow that occurs on
> bright white areas of an image? Any tutorials you know of? I don't have
> Photoshop, but I do have Paint Shop Pro 7. A batch processing solution would
> be even better.
Use the "glow" post process filter in MegaPOV?
--
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/
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From: Jan Walzer
Subject: Re: Overexposed? Post Processing of POV images.
Date: 21 Apr 2002 13:35:23
Message: <3cc2f85b@news.povray.org>
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"Christopher James Huff" <chr### [at] maccom> wrote:
> Use the "glow" post process filter in MegaPOV?
thats too simple
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what he probably meant is, that there is
also a glow-postprocess option in Megapov
please check the docs ...
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