Under CopyrightMichaelsen, E.E.MichaelsenRoschkowski, D.D.RoschkowskiDoktorski, L.L.DoktorskiJaeger, K.K.JaegerArens, M.M.Arens2022-03-113.11.20102010https://publica.fraunhofer.de/handle/publica/36730310.24406/publica-fhg-367303Computer vision is an ever more important means for the navigation of UAVs. Here we propose a landmark recognition system looking for salient man-made infrastructure. An object-oriented structural system is preferred since it can utilize known properties of these objects such as part-of hierarchies, mutual geometric constraints of parts, generalization etc. The structure, available for use as landmark, will vary strongly with the region the UAV is supposed to navigate in. Clear object-oriented coding of the knowledge on the landmarks, their constraints, and their properties is a key to swift adaption. This contribution reports on an example: Adapting a system, designed for a central European country (Germany), for use in a more Eastern region (Turkey).en004670conference paper