Power of Power - Cleaning sketches with GIMP and vectorization with Inkscape - inkscape, gimp, vectorization

Support Power of Power Buying Kewl Stuff

FacebookTwitterReddit
supercerealoso

supercerealoso: Cleaning sketches with GIMP and vectorization with Inkscape

Posted: Mon Mar 07 2016

Hey guys, I found another free program for image editing that helps a lot to clean the sketch in a drawing. First I'll show you one of my sketches.

drawing

Note I use blue marker for the sketch and black marker for the line art. This is important, at least for this tutorial. I'll show you how to remove the color blue using GIMP. You can get GIMP for free in the following link: GIMP.

First, step. Scan the drawing and then open the file with GIMP.

drawing

Next, click Colors>Components>Decompose.

drawing

Check that the selected Color model is RGB and the Decompose to layers box is checked. Then click OK.

drawing

This will open a new window, the same image but separated in 3 layers (one for each color in RGB). These layers are all in grayscale.

drawing

You'll see a trash can in the small layers window. Select the layer named "red" and delete it by clicking the trash can. Do the same thing with the layer "green".

drawing

Now the layer "blue" is the only one left. You'll notice that the sketch is almost gone. The gray heads that are still visible were done with darker blue tones on purpose to show that you need the lightest blue marker you can get. But we can still get rid of them.

Go to Colors>Brightness-Contrast.

drawing

By adjusting the contrast level you'll get rid of gray lines (if they are not too close to black).

drawing

For some reason, you won't be able to save, but you can export. File>Export As...

drawing

Finally, you get your clean line art. You could color it with your favorite image editing software now. I personally use Inkscape to get a vector version of the drawing. You can download Inkscape for free in the following link: Inkscape

To do the vector version, first open the image file with Inkscape.

drawing

Click on the Image to select it, and then type Alt + Shift + B.

drawing

I usually use a Threshold of 0.6, but you can modify it to experiment or just leave the default value. Click OK.

drawing

This will trace a vector based on your drawing, you can then save it to SVG, or EMF in case you want to edit it with Adobe Flash. Thatโ€™s all for now, have fun.


And now, stuff that might fool Google into doing my marketing job for me.

Keywords: supercerealoso, powerofpower, power of power, webcomic, inkscape, gimp, vectorization


license

Power of Power is recorded in front of a live studio audience.