Re: [Gimp-user] About Pointillism / Pointillist Effect

2009-01-29 Thread Sven Neumann
On Wed, 2009-01-28 at 09:58 -0500, J Figueroa G wrote:
 I have one question about a filter, plugin or script that can make a
 similar effect like THIS IMAGE

Try Filters-Distort-Newsprint


Sven


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[Gimp-user] About Pointillism / Pointillist Effect

2009-01-28 Thread J Figueroa G
I have one question about a filter, plugin or script that can make a similar
effect like THIS
IMAGEhttp://www.muylinux.com/wp-content/uploads/2009/01/linus-y-gnome-1.jpg

I can say that this is an Pointillist Effect, but the newspaper filter
effect can't make.

I hope that you can give me one answer or guide steps.

TY.
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Re: [Gimp-user] About Pointillism / Pointillist Effect

2009-01-28 Thread Claus Cyrny
J Figueroa G wrote:
 I have one question about a filter, plugin or script that can make a 
 similar effect like THIS IMAGE 
 http://www.muylinux.com/wp-content/uploads/2009/01/linus-y-gnome-1.jpg
 
 I can say that this is an Pointillist Effect, but the newspaper filter 
 effect can't make.
 
 I hope that you can give me one answer or guide steps.

At a very first glance, I see that this is an
indexed image with a color depth of just 1-bit.
This effect can be achieved by dithering
the image.

One (quick) way to do it would be:

1.) Convert the image to greyscale.
2.) Optimize it (remove background etc.)
3. Increase the contrast as much as possible,
without losing the details you would like to
keep.
4.) Convert the image from greyscale to indexed
with 2 colors (black and white). Set the options
'Use a black and white (1-bit) palette' and
'Dithering  Color Dithering  Floyd-Steinberg
(reduced color bleeding)'.

You may not get all the subtle details included in
your example (this 'copperplate engraving' effect),
but at least that's a start. Maybe there is some
plug-in for the Gimp available.

HTH,

Claus

-- 
Claus Cyrny : Webdesign |  Grafik | Fotografie
:: Web: http://home.arcor.de/ccyrny/ ::.
:: Fotos: http://photo.net/photodb/slideshow?folder_id=714471 ::.
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Re: [Gimp-user] About Pointillism / Pointillist Effect (correction)

2009-01-28 Thread Claus Cyrny
Claus Cyrny wrote:

 3. Increase the contrast as much as possible,
 without losing the details you would like to
 keep.

Here I made a mistake. The more shades of grey
you have in the original image, the better the
dithering (- more details).

Claus

-- 
Claus Cyrny : Webdesign |  Grafik | Fotografie
:: Web: http://home.arcor.de/ccyrny/ ::.
:: Fotos: http://photo.net/photodb/slideshow?folder_id=714471 ::.
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Re: [Gimp-user] About Pointillism / Pointillist Effect

2009-01-28 Thread Claus Cyrny
Nathan Lane wrote:
 I just tried out what Claus suggested on this picture of Dennis Ritchie 
 (attached).
 
 1. Image  Mode  Grayscale
 2. Colors  Brightness-Contrast (Brightness=127, Contrast=35)
 3. Image  Mode  Indexed (Generate optimum pallette, Maximum number of 
 colors=2)
 4. Opened up the Colormap tab on the Layers, Channels,... toolbox 
 (color0=00, color1=ff)
 
 and I ended up with the other attached image that almost looks like the 
 Linus Torvalds image you attached.

I tried this myself and came up with something similar,
but the dithering in the Linus Torvalds image is
much subtler. My guess is that this was achieved
by using a plug-in (Photoshop?). I couldn't find
anything similar (at least during a quick search)
on the Gimp plug-ins site, at http://registry.gimp.org/.
Maybe someone else can find anything.

Greetings,

Claus

-- 
Claus Cyrny : Webdesign |  Grafik | Fotografie
:: Web: http://home.arcor.de/ccyrny/ ::.
:: Fotos: http://photo.net/photodb/slideshow?folder_id=714471 ::.
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