Archive for Cartoon

Photo to Comic Cartoon Effect #GIMP

Posted in GIMP with tags , , , , on 05/01/2010 by itsmeela

Hey guys!

I just learned another cool effect and you can try it too!  If you want to turn your picture into something like a comic cartoon, then this is the tutorial for you.

Tips in choosing an image to work on: choose something that is bright, pictures taken outside would be a better choice, and if you will be working on an image of a person make sure that the face itself has no shaded part.

Let’s start!

Open your photo and name the layer “original”.

click image to enlarge

Then duplicate it and name the layer “ink”.  Select Colors->Threshold then slide the slider back and forth to find an appealing set of black and until you achieve the look that you want.  You don’t have to define the whole image here, just the darkest regions.

click image to enlarge

Duplicate the original layer again and move it to the very top of the layer stack.  Name this layer “lines”.  With the “lines layer” selected, choose Filters->Edge Detect->Difference of Gaussians.  With Radius 1, higher values make thicker lines while lower values get finer detail.  Click on “Preview” to see the effect before applying it on your layer. You may have to undo and try a different value a few times.  I used 12 for radius 1 and 7 for radius 2. Your image should look like the one below.

click image to enlarge

After which, select Colors->Threshold again but on the “lines” layer. Your image will go white.  Slide the slider pretty far to the right, and the lines will appear.  Slide it up to the part that shows a bunch of noisy specks like the one below.  Erase any lines you don’t like or regions of noise.

click image to enlarge

Set the Mode of the “lines layer” to Multiply then right click on the it and select Layer->Merge Down.  Choose Colors->Levels and set the Output Level on the right to 240.

Now let’s put some color on it.

Duplicate the Original layer again then move the new layer to the top of the layer stack, and name it “Color” and set the layer Mode to Color. This will give you very little color.  Again, duplicate the Original layer then move the new layer to the top of the layer stack, and name it “Sat”.  Set the layer Mode to Saturation.  Now you have color!  You can adjust the Opacity until it looks right.

click image to enlarge

There are times when your image looks like it has a lot of black shadows where there should be a fabric or something depending on the image used. To make that missing part show, we can add a layer of shadow.

Turn off your Color and Sat layers by clicking on the “eye” icon.  Click on your “Ink layer”. With the Select By Color tool, click on any black part of your image.  Then go to the Original layer and then select Copy and Paste. Name the resulting floating layer “Shadows”.  It will have the portions of the original image that correspond to the blacks in your Ink layer.

Then choose Colors->Threshold and find the point where you can see the details you’ve been missing. Then select Colors->Levels and set the Output Level on the right to somewhere around 40. Then move that layer to just above your Ink layer and select Layers->Merge Down.

Meanwhile, if you want to add lighter shadows, you just need to follow the same steps but you will only have to choose white shades instead of black shades.

Now, for the final touch, select the “Ink layer” then choose Filters->Blur->Gaussian Blur and use a radius of 1 or 2.  Then on the “Sat layer”, choose Filters->Re-Show Gaussian Blur and use a radius of about 11.  And we’re done!


Thanks to my source!

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