Converting Image/Jpeg to vector

[Datum]

Good day,

I am looking for some guidance on how to convert a jpeg to a vector. I attached an image titled "Image to Convert" that is the one I would like to covert to the vectored file. I have also attached an image titled "Desired Result" which is what I would like to achieve as an end result. Any help or guidance in how to achieve this would be greatly appreciated and thanks in advance.

[Blende21]

The desired result is IMHO no vector image. The initial image was converted to b&w, all greys eliminated, then set to negative, probably masked to get rid of the sky and pasted over a blue plane. Or the black of the negative was converted into Blue. But it is still a pixel image.

[Mark Oehlschlager]

@Datum 

If you're on a Mac, there is an inexpensive little utility app that will convert bitmap images to 1- and 2-color vector files. It's called "Image Vectorizer". Look for it in the Mac App Store.