Learn More
This paper reviews the current state of laser scanning from airborne and terrestrial platforms for geometric reconstruction of object shape and size. The current performance figures of sensor systems are presented in an overview. Next, their calibration and the orientation of the acquired point clouds is discussed. For airborne deployment this is usually(More)
Terrestrial laser scanning provides a point cloud, but usually also the " intensity " values are available. These values are mainly influenced by the distance from sensor to object and by the object's reflection properties. We demonstrate that it is possible to retrieve these reflection properties from the observed range and the intensity value. An(More)
Due to its ability to provide dense, fast and accurate range measurements, airborne laser scanning (ALS) is becoming increasingly popular for extensive, large area surveying tasks; however, there is still a lack of (published) methods for 3D segmentation and object modeling that exploit the full potential of this new technology. In this paper, we(More)
Outlining patches dominated by different plants in wetland vegetation provides information on species succession, microhabitat patterns, wetland health and ecosystem services. Aerial photogrammetry and hyperspectral imaging are the usual data acquisition methods but the application of airborne laser scanning (ALS) as a standalone tool also holds promises(More)
Airborne laser scanning-also referred to as LIDAR-became a standard method for the acquisition of topographic data. However, since the first commercial flights in 1994 a significant development in the sensor technology can be observed. These developments lead to a high increase in data volume due to a significant higher number of determined echoes as well(More)
SUMMARY In this overview paper the principles of laser scanning systems are presented. This includes a survey of different range measurement principles as well as different mechanisms for the deflection of the emitted laser beam. Furthermore, the usage of the laser scanning (LS) principle at different platforms (airborne (ALS), terrestrial (TLS), satellite)(More)
  • Michael Doneus, Christian Briese, Martin Fera, Ulrike Fornwagner, Monika Griebl, Martin Janner +1 other
  • 2007
For the last 4 years, an area covering 700 km 2 along the river Leitha 30 km southeast of Vienna has been investigated in two research projects. This paper presents the preliminary results and tries to demonstrate the potential of an integrated approach using aerial reconnaissance, targeted field walking, and ALS, and shows the high-quality information that(More)
Due to world wide flood events hydrodynamic-numerical (HN) water flow simulation became a topic of highest interest. Next to the consideration of physical properties, a high quality geometric model of the runoff surface is essential for these simulations. In the last years airborne laser scanning (ALS) became the prime data acquisition technique for the(More)