This looks like a countour map of a real place. If it is, then an alternative approach would be to go to the USGS site and download the DEM data of the location. Use a programme that will read DEM info (I use Fractal Terrains) but I expect WILBUR (which is free) will be able to do (not sure). I think there may be some DEM to vector converters out there, but this is getting beyond my field of knowledge.