This paper presents a technique for creating a triangle mesh that tightly fits a terrain surface represented by a set of digitized contour lines. Basic to the technique is a Medial Axis transformation of a polygon, in this case formed by one or more contour lines. The advantages of using this mesh rather than the well known Delaunay triangulation for computing a gridded Digital Terrain Model (D...

The current research aims to further investigate the application of Automated Machine Control/Guidance (AMC/G) in construction projects and proposes an integrated approach for: (1) Improving the administrative infrastructure required for the optimal application of AMC/G; and (2) Orchestrating the machine-level AMC/G technologies into a coherent project-level system committed to the coordination...

The pushbroom scanner HRSC (High Resolution Stereo Camera) onboard the European Mars Express mission is orbiting the planet Mars since January 2004 and delivers stereoscopic imagery with five panchromatic and four colour channels. This paper describes the process of improving the exterior orientation of the HRSC which is needed in order to derive high quality products such as high resolution Di...

Open-source, satellite-based digital elevation models (DEMs) are widely used for flood modeling. However, studies on effectiveness of these DEMs in depicting local-level processes limited. This study generated a high-resolution terrain model (DTM) based unmanned aerial vehicle (UAV) photogrammetry and two-dimensional (2D) hydrodynamic (HEC-RAS) to simulate the floodplain environment Jamuna Rive...

In the Authoritative Topographic Cartographic Information System (ATKIS), which is the main public topographic data base in Germany, the heights and the 2D positions of objects such as roads are stored separately in the digital terrain model (DTM) and digital landscape model (DLM). However, for many applications a combined visualization and processing of these two data sets is useful, leading t...

The paper presents the first part of a research project concerning creation 3D terrain models useful to understand landslide movements. Thus, it illustrates process multi-source high-resolution Digital Terrain Model (DTM) in very dense vegetated areas obtained by integrating data coming from three sources, starting long and medium-range Terrestrial Laser Scanner up Backpack Indoor Mobile Mappin...

• Analysis of the combined effect computational mesh and DTM resolutions. Study conducted in 4 basins a total 7 precipitation events. In each basin, 3 resolutions were considered. Rainfall events modelled with fully distributed hydrodynamic 2D-SWE model. Modelling hydrological processes models based on shallow water equations implies high cost, which often limits resolution mesh. Therefore, pra...

Abstract In the geodetic data processing field, most methods for dealing with inequality constraints model are based on additive random error (ARE) models, and there have been few studies mixed multiplicative (MAAMRE) models constraints. To address this problem, a MAAMRE is first established definition of constraint equations, then, corresponding parameter estimation algorithm proposed idea an ...

Models of urban areas are an important input for many applications in the field of urban monitoring. Besides the creation and updating of maps from sprawling urban settlements the models are also used for simulation and planning in case of catastrophic events like flooding, tsunamis or earth quakes. With the availability of very high resolution (VHR) satellite data investigations of large urban...

The German Authoritative Topographic Cartographic Information System (ATKIS) stores the height and the 2D position of the objects in a dual system. The digital terrain model (DTM), often acquired by airborne laser scanning (ALS), supplies the height information in a regular grid, whereas 2D vector data are provided in the digital landscape model (DLM). However, an increasing number of applicati...