Pierre Grussenmeyer

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Airborne laser scanner technique is broadly the most appropriate way to acquire rapidly and with high density 3D data over a city. Once the 3D Lidar data are available, the next task is the automatic data processing, with major aim to construct 3D building models. Among the numerous automatic reconstruction methods, the techniques allowing the detection of(More)
Following the development of 3D data acquisition techniques like digital photogrammetry, remote sensing and airborne laser scanning, the automatic building modelling is still a challenging task. Indeed, it takes a growing place in many research fields like 3D city modelling, cartographic analysis, urban planning, visualization and Geographic Information(More)
More and more cities are looking for service providers able to deliver 3D city models in a short time. Airborne laser scanning techniques make it possible to acquire a three-dimensional point cloud leading almost instantaneously to Digital Surface Models (DSM), but these models are far from a topological 3D model needed by geographers or land surveyors. The(More)
Two implementations of the bundle adjustment problem were applied to a subset of the Zürich City Hall reference data set. One implementation used the standard Euler angle parameterisation of the rotation matrix. The second implementation used all nine elements of the rotation matrix as unknowns and six functional constraints. The second formulation was(More)
In the last decade, RGB-D cameras also called range imaging cameras have known a permanent evolution. Because of their limited cost and their ability to measure distances at a high frame rate, such sensors are especially appreciated for applications in robotics or computer vision. The Kinect v1 (Microsoft) release in November 2010 promoted the use of RGB-D(More)
Synthetic aperture radar (SAR) interferometric data offer the opportunity to measure temperate glacier surface topography and displacement. The increase of the resolution provided by the most recent SAR systems has some critical implications. For instance, a reliable estimate of the phase gradient can only be achieved by using interferogram local(More)
Airborne LiDAR data and optical imagery are two datasets used for 3D building reconstruction. In this paper, the complementarities of these two datasets are utilized to perform a primitive-based 3D building reconstruction. The proposed method comprises following steps: (1) recognize primitives from LiDAR point cloud and roughly measure primitives’(More)
The acquisition of 3D data and their integration in information systems which are mainly used for topographic issues are very increasing in the last years. The enlarged needs in 3D information appear with the development of the complexity of the processings in topographic information systems. The middle-sized and big cities, which have a large extent, have(More)
Monitoring temperate glacier activity has become more and more necessary for economical and security reasons and as an indicator of the local effects of global climate change. Remote sensing data provide useful information on such complex geophysical objects, but they require specific processing techniques to cope with the difficult context of moving and(More)