Wel I gues that then I haven't tried to use the most common approach when I was trying to implement image vectorization myself some ten years ago.
In the approach I used I first tried to convert the raster image into a scetch like image (just lines representing objects shapes) and then I was applying a triangualization algorithm to that scetch image.
It worked half of the time which was a huge sucses at that time for me. But I never figured out why it doesen't always works since I didn't know wheter the cause for that might be either in my "scetchink" code or the triangualization code which wasn't mine.
Anywhay after some time I lost interest in that firstly becouse it didn't always work and I had no diea why. Frankly even now I don't know how I managed to make it work even those half times.
Another reason why I lost interest in that is becouse it was extreemly slow. Why it was slow? Becouse at that time I was still working with Canvas.Pixel-s. And what is worse I was working with Images instead of bitmaps which made everything even worse.
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