Electronic apparatus and controlling method thereof

An electronic apparatus includes a memory storing map data corresponding to a travelling space, the map data comprising Z-axis information. The electronic apparatus further includes a camera and a processor configured to: obtain first height information of an object included in one point of the map data, based on a first image obtained by the camera at a first location while the electronic apparatus is travelling, obtain second height information of the object included in the one point of the map data, based on a second image obtained by the camera at a second location that is different than the first location, and update the Z-axis information corresponding to the one point based on the first height information and the second height information.