Abstract. In four study areas within different lithological settings and rockfall activity, lidar data were applied for a morphometric analysis of block sizes, shapes talus cone characteristics. This information was used to investigate the dependencies between size, shape lithology on one hand runout distances other hand. our study, we able show that seems have an influence size gravitational s...

Estimations of the local roughness of Digital Elevation Models (DEMs) have been used both for a better geological understanding of terrain structures and for a more accurate DEM interpolation leading to higher resolution terrain maps. This work investigates two fractal dimension estimators for the characterization of the roughness of DEMs: the power spectrum estimator and the wavelet-based esti...

The aerodynamic roughness is one of the major parameters in describing the turbulent exchange process between terrestrial and atmosphere. Remote Sensing is recognized as an effective way to inverse this parameter at the regional scale. However, in the long time the inversion method is either dependent on the lookup table for different land covers or the Normalized Difference Vegetation Index (N...

Our first motive for this research stems from problems with traditional terrain representations which were recognized as early as 1967 by Boehm. Topographic surfaces are non-stationary (Pike and R-ozema, 1975), i.e., the roughness of the terrain is not periodic but changes from one landtype to another. A regular grid therefore has to be adjusted to the roughest terrain in the mod'el and be high...

This work proposes an innovative app navigation path-planning problem exploration rovers by including terrain characteristics. The objective is to enhance the typical 2D arithmetical cost function by adding 3D information computed from the laser-scanned terrain such as terrain height, slopes, shadows, orientation and terrain roughness. This paper describes the algorithm developed by UPM and GMV...

This paper presents a terrain mapping and path planning techniques for a planetary exploration rover. A light detection and ranging (LIDAR) is employed in this work to obtain a point cloud data of the terrain feature. A terrain map converted from the point cloud data is represented with a sector-shaped reference grid, resulting in a digital elevation map with the cylindrical coordinate, called ...

This paper presents a Fuzzy Rule-Based Safety Index that quantipes the ease-oflanding a spacecrap on a planetary surface based on sensorderived measurements of terrain characteristics. These characteristics include, but are not limited to, slope and roughness. The proposed representation of terrain safety incorporates an intuitive, linguistic approach for expressing terrain characteristics that...

3D terrain data have been used for various systems such as navigation and landscape analysis systems. Recently, the number of 3D terrain data and databases is increasing rapidly. To handle these data effective, such systems need the ability to search 3D terrains to find matches based on shape similarity. In this paper, we propose a pattern matching technique for searching similar terrain segmen...