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In GIMP, I'm using the "Bucket Fill" tool to add colour to a black surface. The shape I am filling includes different shades of black/grey, with different alpha values, as can be seen in the image below:

original, unfilled shape

Adjusting the "Threshold" option allows for the Bucket Fill tool to affect areas with different colours that touch each other, either vertically-horizontally, or that and diagonally. This is a great option, but I have yet to find a way to fill different shades of the new colour automatically, according to the different shades of the target colour affected by the threshold value.

As an example of what I would like to avoid, here's an image:

shape filled with desired colour, but undesired pixelated effect

As you can see, the desired colour for the object is all uniform, which gives it an undesired rough and pixelated look. How do I avoid this?

P.S. I would have liked to graphically show what effect I want to achieve, but if I could show you, using an image that I've created, then there would be no need for the question.

GPWR
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1 Answers1

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I don't know Gimp well enough to know if there's an equivalent - though there's usually a way to do anything Photoshop can do. In Photoshop I'd do this with a Hue/Saturation overlay, with the 'colorise' setting on. This will change the colour value of every pixel, without affecting anything else. [I just guessed the colour, didn't measure it.]

enter image description here

The paint bucket is a blunt instrument, it can't really manage this kind of subtlety. It will either fill a pixel or it won't. Anti-alias is then applied without reference to the existing edges.

Gimp apparently has Colourise separate in the Tools > Colour Tools menu [again, complete guess on the actual colour]

enter image description here

Tetsujin
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