I made some icons using Krita. How do I get those icons into Android Studio?
I think what you are trying to describe is redrawing the icon, using image editing software - Krita will certainly work for this, as would Inkscape, or Illustrator, etc.
You could open the existing picture, create new layers on top, then use the original image as a guide to trace/redraw the shapes on those new layers. When finished you could delete the original image layer, then export the finished artwork as a PNG.
I used Inkscape for this example, but I'm sure you'll get the general idea