Abstract
The sizes of buildings have been computed from two photographs from different directions. By conducting an inverse perspective transformation, a three dimensional representation of a building can be obtained. Unfortunately, there are cases where only one photograph of the scene is remaining. This is the case when we reconstruct the buildings from landscape from back in the past from an old photograph. By combining map information with photographs, we have proposed a method for obtaining the size of buildings. Using AutoCAD and geometric construction methods, we show that reconstruction can be done accurately. The case where trees and other buildings obstruct the view are also addressed.
