SIMPLIFIED BUILDING MODELS EXTRACTION FROM ULTRA-LIGHT UAV IMAGERY
- 1EPFL-CVlab, CH-1015 Lausanne Switzerland
- 2Pix4D LLC, Bundesamt für Landestopographie 3084 Wabern, Switzerland
- 3Ascending Technologies GmbH, Konrad-Zuse-Bogen 4 82152 Krailling b. München Germany
Keywords: UAVs, Photogrammetry, 3D Reconstruction, Simplified Building Models
Abstract. Generating detailed simpliﬁed building models such as the ones present on Google Earth is often a difﬁcult and lengthy manual task, requiring advanced CAD software and a combination of ground imagery, LIDAR data and blueprints. Nowadays, UAVs such as the AscTec Falcon 8 have reached the maturity to offer an affordable, fast and easy way to capture large amounts of oblique images covering all parts of a building. In this paper we present a state-of-the-art photogrammetry and visual reconstruction pipeline provided by Pix4D applied to medium resolution imagery acquired by such UAVs. The key element of simpliﬁed building models extraction is the seamless integration of the outputs of such a pipeline for a ﬁnal manual reﬁnement step in order to minimize the amount of manual work.