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+--- Thread: Color map-indexed image (/Thread-Color-map-indexed-image)
Color map-indexed image - chakravartysourav - 04-21-2022
I am looking to stretch out my 256 color positions in the indexed color map using two colors. I can select the individual boxes and change the color, however, I was hoping to select all boxes at once and define the darkest and lightest box colors and then let gimp spread out the color across the boxes. In photoshop I can just select the first box and then drag until the last, is there any similar option?
Attached image from photoshop
RE: Color map-indexed image - rich2005 - 04-21-2022
Clever old PS
never seen that one before Using Gimp a bit more hands on. First thoughts, a couple of ways
Make a gradient using the FG / BG gradient. Once selected those colours appear as a 'custom gradient' top of the gradients dock
A right click in the Palettes Dock and import a new palette using that gradient as a source.
Map > Set Colormap using that new palette.
https://i.imgur.com/NR9NzuY.mp4
or for a quick-n-dirty way using indexed images inherit the colormap of the original image
Make a new blank image
Fill it with a gradient
Convert to indexed.
Click and drag the original image over as a new layer.
https://i.imgur.com/yRLrGTy.mp4
Note the various modes for gradients, it does make a difference for colour distribution.