What's that off in the distance?

I finally got my program to the point where it can edit the blocks in a minecraft save!  Now I plan to work on being able to import pictures.  I might even try to import 3D models, although more likely not.  I plan to first convert pictures to colors that can be represented with minecraft wool, and then put wool in.  I don't know much about picture file formats, so this might take a bit of work.  I think python has good libraries for this, so I might not even have to deal with that type of thing.