I have let it run for ~40k shapes on a very hi-res photograph of my adorable children in front of a stream, and it is a beautiful thing to watch the resolution

I have let it run for ~40k shapes on a very hi-res photograph of my adorable children in front of a stream, and it is a beautiful thing to watch the resolution unfold. I love that I end up with a vector graphic at the end. I have a crazy question: It generally seems to fill in detail uniformly, across the entire image. It's like the entire thing is coming slowly into focus. At some point, I'd prefer the algorithm to care a little less about filling in detail on the background, and focus more detail on the "items of interest" in a scene, the high-contrast regions or something. Perhaps even to have some manual control over it. Would this be possible? I am a total amateur when it comes to image analysis, btw, just thought it would be cool.