Re: [Gimp-user] replacing colors

2009-02-13 Thread J Figueroa G
This info is in spanish language, but the step by step can help you...
http://www.gimp.org.es/modules/newbb/viewtopic.php?post_id=4584#forumpost4584

Good luck!

J Figueroa G (Sierra)
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Re: [Gimp-user] replacing colors

2009-02-12 Thread David Gowers
Hi!

On Fri, Feb 13, 2009 at 3:45 PM, Patrick Horgan  wrote:
> Greg Chapman wrote:
>> On 11 Feb 09 23:42 "Jozef Legény"  said:
>>
 Is there a way to make the color I fill those areas in with change
 in relation to the colors it's replacing?  For example, if I
 select a range of greenish colors, is there a way I can replace it
 with a range of blueish colors instead of just one particular
 blue?

> While fill doesn't work,
It does work.

>  you can easily do what you want by selecting a
> big brush, setting the mode to hue, and brushing across the selection.
> Hue leaves the saturation (how much color) and value (where on the
> black-gray-white scale), alone, and just changes the hue (what color).
> If you get a big enough brush you can do it in one click.
What you just did, is fill.

If you want to fill, use the fill tool. Set the mode to hue of course,
and shift-click on the desired area ( or just select the option 'fill
entire selection' and click normally)

David
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Re: [Gimp-user] replacing colors

2009-02-12 Thread Patrick Horgan
Greg Chapman wrote:
> On 11 Feb 09 23:42 "Jozef Legény"  said:
>   
>>> Is there a way to make the color I fill those areas in with change
>>> in relation to the colors it's replacing?  For example, if I 
>>> select a range of greenish colors, is there a way I can replace it
>>> with a range of blueish colors instead of just one particular 
>>> blue?
>>>   
While fill doesn't work, you can easily do what you want by selecting a 
big brush, setting the mode to hue, and brushing across the selection.  
Hue leaves the saturation (how much color) and value (where on the 
black-gray-white scale), alone, and just changes the hue (what color).  
If you get a big enough brush you can do it in one click.  I 
often select an area like for instance, a friends face with the magic 
wand, and change the color while retaining all the highlights and the 
brightness.

Patrick

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Re: [Gimp-user] replacing colors

2009-02-12 Thread Noel Stoutenburg
firestick wrote:
> In selecting areas by color (whether contiguous or not) I can set the
> threshold to get more or less colors similar to the exact color I click
> on.  I can then drag a color from the toolbar and drop it on the image
> and it will fill in those selected areas, and this is really cool
>
> Is there a way to make the color I fill those areas in with change in
> relation to the colors it's replacing?  For example, if I select a range
> of greenish colors, is there a way I can replace it with a range of
> blueish colors instead of just one particular blue?

Here's a different approach to getting the effect you want, based upon 
the proposition that it will take more (perhaps much more) time to get 
the effect you want by replacing the colors in the pixels you want to 
change with new ones, than it will by modifying the existing pixels,

1)  Open the image you wish to modify

2)  Select the areas of your image where you want to change the colors, 
and copy the selection, and paste it into a new layer filled with 
tranparency.

3) Open a new image filled with transparency, and copy the layer you 
made in step 2 above to this new image.

4)  Using the color balance and hue saturation dialogs, make the 
adjustments want to the colors in the image you created in item 3.

5)  Copy the entire modified image and paste it into a new, transparent 
layer in the original image.

6)  In the new layer in the original image, select the  background by 
color, and invert the selection.

7)  Leaving the selection intact, select the base image as the active 
layer; cut out the selection.

8)  Merge the layers together.

ns




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Re: [Gimp-user] replacing colors

2009-02-11 Thread Greg Chapman

On 11 Feb 09 23:42 "Jozef Legény"  said:
> > Is there a way to make the color I fill those areas in with change
> > in relation to the colors it's replacing?  For example, if I 
> > select a range of greenish colors, is there a way I can replace it
> > with a range of blueish colors instead of just one particular 
> > blue?

Sounds like a case for the LEVELS dialogue to me, and then some 
playing with the CHANNELS and adjustment of light, dark and gamma 
settings on each of them.

Greg Chapman
http://www.gregtutor.plus.com
Helping new users of KompoZer and The GIMP

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Re: [Gimp-user] replacing colors

2009-02-11 Thread Michael J. Hammel
On Wed, 2009-02-11 at 18:33 -0500, firestick wrote:
> Is there a way to make the color I fill those areas in with change in
> relation to the colors it's replacing?  For example, if I select a range
> of greenish colors, is there a way I can replace it with a range of
> blueish colors instead of just one particular blue?

1. Desaturate the selected area.
2. Use the Bucket Fill tool with the blend mode set to Overlay or
similar.
-- 
Michael J. Hammel 

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Re: [Gimp-user] replacing colors

2009-02-11 Thread Jozef Legény
On Thursday 12 February 2009 00:33:09 firestick wrote:
> Hey folks,
> ((thought I already sent this but I can't find it.  sorry if repeat))
>
> In selecting areas by color (whether contiguous or not) I can set the
> threshold to get more or less colors similar to the exact color I click
> on.  I can then drag a color from the toolbar and drop it on the image
> and it will fill in those selected areas, and this is really cool
>
> Is there a way to make the color I fill those areas in with change in
> relation to the colors it's replacing?  For example, if I select a range
> of greenish colors, is there a way I can replace it with a range of
> blueish colors instead of just one particular blue?
>
> Thanks,
> Cheers-
>
>
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With simple drag and dropping no, but there are several ways to obtain similar 
effect.

You can for example create the selection as usual, then create a new layer and 
fill the new layer (with selection still on) with the color of your choice. 
Then change the blending mode of the upper layer to "color" or "hue" 
(whichever gives the better effect)

Alternatively you can select the region and use the colorize plugin from the 
Color->Colorize

Best regards
Jozef
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Re: [Gimp-user] Replacing colors

2008-11-23 Thread Daniel Hornung
On Sunday 23 November 2008, Avraham Makeler wrote:
> My first task is to replacing colors in an image - like Find-Replace.
> First, how do you do a straightforward 'Replace Colors' op?
>
> Second: my specific need is to convert a gray gradient to a similar one in
> a shade of red/pink.

Hello!

The documentation http://docs.gimp.org/ is your friend:
http://docs.gimp.org/en/plug-in-exchange.html
http://docs.gimp.org/en/plug-in-gradmap.html

Daniel


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