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Here are examples of the noise_pigment patch...the first image
demonstrates the pigment itself, from left to right:
plain color
plain monochrome
gaussian color
gaussian monochrome
The second image demonstrates it's intended use, as a control pigment
for post_process filters. It was done by averaging the pigment with the
image, using the add and divide post_process filters.
And of course, this pigment is not animation-safe(unless you *want*
shifting static), and anti-aliasing tends to muddy it up into a grayish
mess.
--
Christopher James Huff - Personal e-mail: chr### [at] mac com
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/
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Attachments:
Download 'NoisePigment.jpg' (43 KB)
Download 'NoisePigment2PP.jpg' (35 KB)
Preview of image 'NoisePigment.jpg'
Preview of image 'NoisePigment2PP.jpg'
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"Chris Huff" <chr### [at] maccom> wrote in message
news:chrishuff-8BD31F.11361623062000@news.povray.org...
| plain color
| plain monochrome
| gaussian color
| gaussian monochrome
I see people are still mulling this one over. Must be the shock of thinking
that fine, clean renders could be subjected to the equivalent of television
"snow".
Bob
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I like the idea, but I can't think of any case I would use it. Keep up the
good work, Chris. :)
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In article <3955917d@news.povray.org>, "Tony[B]"
<ben### [at] panamac-comnet> wrote:
> I like the idea, but I can't think of any case I would use it. Keep up the
> good work, Chris. :)
You would probably use it wherever you would use the "noise" filter in
Photoshop.
I think it might be useful for things like the grainyness of an old
photo, and maybe for adding some randomness to a height field or
image_map...
--
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://homepage.mac.com/chrishuff/
TAG Web page: http://tag.povray.org/
Post a reply to this message
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From: Robert Chaffe
Subject: Re: Noise Pigment - attached files (1/1)
Date: 25 Jun 2000 22:30:59
Message: <3956c063@news.povray.org>
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"Chris Huff" <chr### [at] maccom> wrote in message
news:chrishuff-182570.10064825062000@news.povray.org...
> In article <3955917d@news.povray.org>, "Tony[B]"
> <ben### [at] panamac-comnet> wrote:
>
> > I like the idea, but I can't think of any case I would use it. Keep up
the
> > good work, Chris. :)
>
> You would probably use it wherever you would use the "noise" filter in
> Photoshop.
> I think it might be useful for things like the grainyness of an old
> photo, and maybe for adding some randomness to a height field or
> image_map...
>
Or maybe tone it down a bit and produce a slightly faded, randomly
cracked image, just like old paintings? Hmmm ...
rc
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In article <3956c063@news.povray.org>, "Robert Chaffe"
<a0003738@airmail.net> wrote:
> Or maybe tone it down a bit and produce a slightly faded, randomly
> cracked image, just like old paintings? Hmmm ...
I think a crackle pigment combined with this would work well for that
purpose...
--
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://homepage.mac.com/chrishuff/
TAG Web page: http://tag.povray.org/
Post a reply to this message
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