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Working on an extracted image

Apr 5, 2011, 03:57
Post: #1
Working on an extracted image
Hello Gimp world.

I am working on an extracted image that contains a logo and a transparent background. I cannot figure out how to change the background of the extracted image leaving the logo with the same colour. I will also like to learn how to change the colour of the logo.

Thanks for your help. This is all new to me.

Carol
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Apr 5, 2011, 20:21
Post: #2
RE: Working on an extracted image
Welcome...

Open the layers dialog (Ctrl-L), create a new dialog, drag it to bottom of stack, make sure it is selected, and bucket-paint it.

To change the logo color, select the logo layer in the layers dialog, then right click and click "Alpha to selection". You should see the "marching ants" around your logo. Paint with any tools (bucket, gradient...), painting will be restricted to the selected area so you cannot spill paint Smile

Now answering your questions on
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Apr 7, 2011, 00:54
Post: #3
RE: Working on an extracted image

.xcf  BlueTankS1.xcf (Size: 131.4 KB / Downloads: 47)
(Apr 5, 2011 20:21)ofnuts Wrote:  Welcome...

Open the layers dialog (Ctrl-L), create a new dialog, drag it to bottom of stack, make sure it is selected, and bucket-paint it.

To change the logo color, select the logo layer in the layers dialog, then right click and click "Alpha to selection". You should see the "marching ants" around your logo. Paint with any tools (bucket, gradient...), painting will be restricted to the selected area so you cannot spill paint Smile

Thanks ofnuts for your response. Perhaps I did not explain the image properly. I have attached it. It's a picture with a logo on it and I would like to colour the tank and logo in different colours. Any help you can give me will be greatly appreciated.

Carol
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Apr 7, 2011, 11:32
Post: #4
RE: Working on an extracted image
You have three things in this image:
  1. the tank
  2. the logo
  3. and, unfortunately, the logo border

The logo border is mostly a choice to make:
  1. it disappears because it's merged in the logo
  2. it disappears because it's merged with the tank
  3. you want to keep it: extract it to its own layer.

To color the logo: I think the easiest way is to erase the logo to make the layer transparent (magic wand plus painting in quickmask mode, then erase). This is where you chose if the border stays on the tank or becomes part of the logo. Then add a layer below, and paint it under the logo. The painting doesn't need to be accurate, the transparency will take care of that.

To change the tank color hue there is a very easy way: set a brush (or even bucket-fill) to the color you want, and apply it in "hue" mode (you can paint the whole layer, paint will only go where it is not transparent). This transfers only the hue component of the paint tool and keeps all shadows and reflections, that are mostly value and saturations changes with the same hue. If you want to change more than the hue, you can use "color" more instead, that transfers hue and saturation, but the picture will look flatter because it will lose the reflections.

Now answering your questions on
https://Gimp-Forum.net
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