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How do I change a red and Black Car photo to a White Car

Jan 4, 2012, 00:42
Post: #1
How do I change a red and Black Car photo to a White Car
Hi

Newby here, so please forgive me if I am missing something obvious.

I have tried various programs with similar results in all cases, but for what ever reason I like GIMP the best of the lot.

What I am trying to do is change a photo of a bright red abd dark black car to a white car.

In all cases what I seem to be running into is the fact that the programs use the existing colour as the start point and allow only so much variation from that colour (ie about 180 +/- in each primary colour) which does not get me to where |I need to be.

I also tried creating a new layer and filling it with the desired colour then changing the layer from normal to hue. The result ends up being a mix of the original colour and the new colour so for instance if I want a yellow over a blue original colour I end up with some variation of green. - Arrrggghhh!

Anyone got any suggestions???

Thanks in advance

AL
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Jan 4, 2012, 07:30
Post: #2
RE: How do I change a red and Black Car photo to a White Car
Yes, not easy. My best shot:
  • Make a selection on the car paint (depending on contents, windows can be left in)
  • Sample the car color with the color picker in some "representative" area
  • Add alpha channel to layer if not there already
  • "Colors/Color to alpha" will turn the paint to mostly transparent
  • Insert a white layer below (you will still have areas with pale remnants of the original color)
  • Put the paintbrush in "saturation" mode and paint over with white.
[attachment=831]

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Apr 9, 2012, 14:39
Post: #3
RE: How do I change a red and Black Car photo to a White Car
i think a lot of color would be easy to make except white because of washed out reflection but i could 1select all red parts with pen tool 2then desaturate avarage 3 curve
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