Abstract: A computer implemented method for generating an augmented image includes the steps of detecting a user input representing a shape and a position of a spatially extended 2D object and of calculating 3D coordinates of a point of interest that is associated with the 2D object. This calculation comprises the steps of calculating a 3D centroid of a first 3D object that is derived from the 2D object, and/or of performing a 2D pattern recognition algorithm that analyses the 2D object. Then 3D coordinates of a second 3D object are calculated, thereby assuming that the second 3D object is located at the same distance from the camera as the point of interest.