Singular Spectrum Analysis (SSA) has been approved as a model-free technique to analyse time series. SSA can solve different problems such as decomposition into a sum of trend, periodicities, and noise, smoothing, and others. In this paper, we validate abilities of 2D-SSA (the extension of SSA to analyse two-dimensional scalar fields) to treat digital terrain models (DTMs). The study is exempli...

Modeling the environment is an essential capability for autonomous robots. To navigate and manipulate without direct human control, autonomous robots must sense the environment, model the environment, and plan and execute actions based on information from the model. Perceiving and mapping rugged terrain from multiple sensor data is an important problem for autonomous navigation and manipulation...

Digital Terrain Modeling, the Triangulated Irregular Network (TIN) is a representation of a surface derived from irregularly spaced sample points and break line features. Paper deals with the basic concept of Delauney’s triangulation method with its practical approach in ArcGIS. The next section describes the process to convert mass points to TIN model and explores some of the basics of TIN Mod...

Radiometric correction is the essential prerequisite to obtain precise and valuable segmentation of remote sensing images, especially when dealing with mountainous regions where the terrain is more likely to be rough. Important applications such as snow cover segmentation have usually to be performed on images of very rough mountainous terrain where this preprocessing step turns out to be espec...

Synthetic Vision Systems (SVS) provides general aviation pilots with displays of stored geo-spatial data representing terrain, obstacles, and cultural features, which have the potential to improve flight safety by providing situational awareness and reducing the likelihood of Controlled Flight into Terrain (CFIT). This paper describes an integrity monitor which uses a novel approach to check th...

6 In this paper we present an inexpensive approach to create highly-detailed reconstructions of the landscape surrounding a road. Our method is based on a space-efficient semi-procedural representation of the terrain and vegetation supporting high-quality real-time rendering not only for aerial views but also at road level. We can integrate photographs along selected road stretches. We merge th...

The paper presents an improved scheme for the visualization of 3D terrain in real-time using Digital Elevation Model (DEM). The method is primarily based on a modified version of Real-time Optimally Adapting Mesh (ROAM) that boosts performance by improving the rendering speed, enhancing the visual continuity and achieving frame rate constancy. We outline how to achieve better detail and continu...

Different data sources for the determination of a digital terrain model (DTM) are available. New measurement techniques like laser scanning (LS) and interferometric synthetic aperture radar (InSAR) allow a high degree of automation and dense sensing. They pushed the development of new methods for data modelling. This paper presents robust methods for the automatic determination of a DTM from po...

A dear-sky spectral solar radiation model for direct and diffuse fluxes, combined with topographic calculations from digital terrain data, computes either incident, net, or reflected solar radiation at any point on a snow surface in mountainous terrain. The radiation may be integrated over any wavelength range from 250 to 5000 nm, or over any time step. Atmospheric attenuation parameters are oz...