Cartoon Shader Idea?

[mbeytekin]

I am looking for a road map for making an image looks cartoon.. Example application is Comica for android...

I've tried Line Integral Convolution method and can get some results but there is something extra for this images. Especially edges are very smooth and clear and sharp...

Another example image is

and

Posterization or color effects is not important. My main goal is getting smoothed and curved edges like these images..

Any idea?

 

[Kaguva]

Maybe this is a good point to start:

Shadertoy

www.shadertoy.com

 

[Kelly G]

I haven't heard of line integral convolution used for this precise thing. Usually it's Sobel edge detection:

Sobel operator - Wikipedia

en.wikipedia.org

That's pretty basic, though, so maybe you've tried it already?

 

[mbeytekin]

Thank you for your answers.. Yes I'm searching for it for a couple of days and finally I found a way from shadertoy
Anisotropic Kuwahara method...

Shadertoy

www.shadertoy.com

when I change
const float radius = 8.0;
const float alpha = 0.01;
const float q = 1.0; I got a cartoonlook result..
But it's very hard to implement to GameMaker shader. Because of using texture2D in dynamic loops GM doesn't compile it.
I'm still trying to implement...

 

[sp202]

You can't use dynamic loops, but you can break out of a loop early.