Creating collisionshape2d from an image of a map?

I'm trying to make a game situated during the Cold War in a style a bit like HOI4, but instead of fighting with divisions and doing stuff like encirclements, it's turn by turn like Pokemon, and there would be more of a focus on unrealistic scenarios over historical.

Is it possible to create a collisionshape2d using an image of a map of countries or provinces? Making all the polygons sounds painful.