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Generate a paint by numbers pattern with GIMP, Something, we came up with on Gimpchat.
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The following is a Gimp tutorial that I had made for Gimpchat.
You can find the original post, in the following link. http://gimpchat.com/viewtopic.php?f=23&t=11991

This tutorial will show you how to convert a picture, art piece, photograph, or other image, into a paint by numbers pattern.
It may not be the example of absolute perfection, but it does work.

What you will need:

A photo, snapshot, art piece, or whatever you wish to try to convert.

A color reduction effect.
the Cartoonizer plugin is pretty good for this ..it will (separately) generate both the outline and the reduced color pallette. But you may still need to manipulate the outline manually to get a satisfactory result.

Some way to resize the image while retaining smooth edges.
This only applies if you're starting with a rather small, or highly detailed image .. if you start with a good-sized image or template Gimp's <Image>Scale Image... function will probably be good enough for scaling and you can control the printed size using <Image>Print Size...

Some way to place the numbers.

A printer
Paints and brushes
A steady hand.

This took some trial and error, and please note that the following may not be in any particular order, as all images may be handled differently.

The first thing you will need to find is whatever you wish to turn into a PBN pattern.
For this, I chose an NES controller.

I chose to vectorize the image in Vector magic first, as Vector magic often changes the pallet around and can also add colors,
afterward using the Cartoonizer plugin, I reduced the colors to 11

I then create a copy of the image, and apply an Edge detection effect, to draw the outline.
Convert to grey scale, then adjust the contrast and brightness until you are left with nothing but solid black outlines.

Taking some advice from jontait2, as well as using a texture pack that they supplied, I used the Color Select tool to select the individual colors, blank them out, then bucket fill the required number.
Afterward, applying the outline copy over the number image.

That's it, you are now ready to print this thing out, and paint it.

Which brings me to a few things to note.

When you print out a PBN pattern, make certain that you print it very light, or paste the numbers at a so that the numbers don't show through the paint.
(Unless you plan to acetone transfer it to canvas)

And, no matter how caught up in the moment that you may get, make sure that you stay calm, focused, and don't rush the paint job...
Something I obviously didn't do. :whoops:

Have fun!

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I know I've already told you this, but that's really cool! I wouldn't mind trying that sometime.
Course clear! You got a card.
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