12-14-2017, 07:19 PM
(12-14-2017, 05:25 PM)SpongeBob Wrote: I can change one color to another one, but I still not be able to remove color from the color map
I haven't ever done what you are trying to do, so I have been playing a little. This is what I have come up with.
1) Make an item transparent.
Use selection tools and do it directly on the image. ie Edit > Clear or the Delete key.
2) Replace one colour in the image with another from the map. (ie reduce the number of colours)
2a. Use the Colour Picker tool and click on colour to be retained. Colour is highlighted in the map and HTML code is displayed lower down.
2b. Copy the HTML code
2c. Use the Colour Picker tool and click on colour to be removed. Colour is highlighted in the map. Right click and edit.
2d. Paste in the HTML code
3) Remove colours from the map. (after using 1 and 2 above)
3a. Colours > Info > Colour Cube Analysis. This will tell you how many colours there are in the image.
3b. Mode > RGB (convert image to RGB)
3c. Mode > Indexed. Use the number of colours supplied by Colour Cube Analysis. A new colour map is created.
If anyone has better methods please let us have them.
Some more info here:
https://docs.gimp.org/en/gimp-indexed-pa...ialog.html