Bay 12 Games Forum

Please login or register.

Login with username, password and session length
Advanced search  

Author Topic: Photo Editing (GIMP) Help Needed: Changing the color of an image  (Read 840 times)

highmax28

  • Bay Watcher
  • I think this is what they call a tantrum spiral...
    • View Profile

Ok, so I'm going to sound like an idiot, but I have a picture of a yellow car I took from online:



And make the yellow car be red but still have the lights, tires and windows still stay the same color. I'm not good enough in GIMP to figure this out. I know there's a process to take the colors of the car (specific ones) and replace them, but me having no experience with GIMP, I have NO idea what I'm doing.

Can I get a few pointers as what to do and maybe some extra help for a beginner for GIMP?
Logged
just shot him with a balistic arrow, i think he will get stuned from that >.>

"Guardian" and Sigfriend Of Necrothreat
Jee wilikers, I think Highmax is near invulnerable, must have been dunked in the river styx like achilles was.
Just make sure he wears a boot.

Bauglir

  • Bay Watcher
  • Let us make Good
    • View Profile
Re: Photo Editing (GIMP) Help Needed: Changing the color of an image
« Reply #1 on: June 06, 2015, 05:10:19 pm »

I would actually love to know a precise way to do this. You can always try the ol' Colors > Color Balance thing, but the only tool I've ever used that lets you pick particular colors on an image and fuck about with them is MGI Photosuite. Which is not free. Then again, I probably just haven't looked hard enough. Anyway, if all else fails, you can always figure out the color you want and use the Color Picker select (next to the Magic Wand) and the Paintbucket (set to Fill Whole Selection).
Logged
In the days when Sussman was a novice, Minsky once came to him as he sat hacking at the PDP-6.
“What are you doing?”, asked Minsky. “I am training a randomly wired neural net to play Tic-Tac-Toe” Sussman replied. “Why is the net wired randomly?”, asked Minsky. “I do not want it to have any preconceptions of how to play”, Sussman said.
Minsky then shut his eyes. “Why do you close your eyes?”, Sussman asked his teacher.
“So that the room will be empty.”
At that moment, Sussman was enlightened.

Nirur Torir

  • Bay Watcher
    • View Profile
Re: Photo Editing (GIMP) Help Needed: Changing the color of an image
« Reply #2 on: June 06, 2015, 05:35:45 pm »

I don't know how to do the process I suspect you want. It'd probably involve saving as a .gif first, to auto-set indexed color mode and save it with only a few shades, then re-opening it to edit.

I do have a fast way, though! With GIMP:

Open the image.
Use the select-by-color tool, next to the magic wand. (Shift-O)
Select the shades you want changed, by shift clicking. I see four shades that need selecting.
On the menu at the top of the image, hit the Colors > Colorize drop-down menu.
Play around with the hue slider.
Save and done.

Edit: Image > Mode > Indexed (11 colors for this image), then Windows > Dockable Dialogs > Colormap.
« Last Edit: June 06, 2015, 05:41:55 pm by Nirur Torir »
Logged

highmax28

  • Bay Watcher
  • I think this is what they call a tantrum spiral...
    • View Profile
Re: Photo Editing (GIMP) Help Needed: Changing the color of an image
« Reply #3 on: June 06, 2015, 07:02:06 pm »

That helped immensely. I now have a bright red car for my programming assignment. Thanks!
Logged
just shot him with a balistic arrow, i think he will get stuned from that >.>

"Guardian" and Sigfriend Of Necrothreat
Jee wilikers, I think Highmax is near invulnerable, must have been dunked in the river styx like achilles was.
Just make sure he wears a boot.