Extracting Road Networks From OpenStreetMap
OpenStreetMap is a very good crowdsourcing map application. It has a cool feature which tag the road in the map by its type. That feature enable us to identify the type of road such as main road, pedestrian road, living street, etc. Besides that, we can also use that feature to extract only the road part from the map. This can be useful when we want to build a routing system which need the road part only.