Vegetation canopy height is one of the fundamental structural parameters for estimating forest biomass and evaluating forest carbon balance. Remote sensing technologies like interferometric synthetic aperture radar (abbreviated as IFSAR or IFSAR) may provide a means to extract vegetation canopy heights remotely. A comparison of canopy height estimates derived from IFSAR scattering phase center ...

LIDAR (Light Detection and Ranging) is one of the most recent technologies in surveying and mapping. The LIDAR is based on the combination of three different data collection tools: a laser scanner mounted on an aircraft, a Global Positioning System (GPS) used in phase differential kinematic modality to provide the sensor position and an Inertial Navigation System (INS) to provide the orientatio...

Many applications require bare-earth Digital Terrain Models (DTMs) in the presence of forest canopy. L-Band is an attractive candidate, but the derived interferometric phase represents a combination of ground and volume scattering contributions from the canopy above. The use of PolInSAR techniques, and the Random Volume Over Ground (RVOG) Model has had considerable success in model inversion st...

Recent advances in airborne light detection and ranging (LIDAR) technology allow rapid and inexpensive measurements of topography over large areas. This technology is becoming a primary method for generating high-resolution digital terrain models (DTMs) that are essential to numerous applications such as flood modeling and landslide prediction. Airborne LIDAR systems usually return a three-dime...

The unique image data of the High Resolution Stereo Camera (HRSC) on Mars Express enable for systematic derivation of Digital Terrain Models (DTMs) and orthoimages. Consequently, several photogrammetric processing algorithms have been investigated with HRSC imagery. The results form the basis for further research including photometric analysis. Within this paper, an integrated approach for phot...

Variational Methods have been frequently used for surface reconstruction and contour extraction (snakes). We present a surface reconstruction method where we assume the surface composed of two regions of di erent types of smoothness. One region of the surface models a \lake" (constant height region with uphill borders). It is surrounded by the other background region which is reconstructed usin...

The fusion respectively the homogenisation of the digital terrain models of the federal states (Länder) of Germany to a nationwide digital elevation model for Germany is described. The aim is a nationwide, consistent, at the moment not yet existing, digital elevation model with an accuracy of ±1 to ±3 m. The incoming data from the states have different grid sizes, techniques and dates of data a...

Abstract The Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) spacecraft spent more than 2 yr characterizing near-Earth asteroid (101955) Bennu. OSIRIS-REx Laser Altimeter (OLA) was responsible for producing the most accurate reconstruction of asteroid’s surface—down to a global resolution around 5 cm with data precision ±1.25 cm. However, b...

The study objective is to extract HydroGeoMorphic Units in wetlands from LiDAR data estimating the required accuracy for assessing their functions in various hydrological and vegetation environments. Several Digital Terrain Models (DTMs) have been derived from LiDAR data with different point densities, ranging from 4 to 1 point/m2 with four interpolation methods. Then, the HGMU have been extrac...

We demonstrate that the freely available USGS planetary cartography software package ISIS and the commercial photogrammetric software SOCET SET jointly provide a complete environment for the processing of Mars Express High Resolution Stereo Camera (HRSC) images. Capabilities include bundle adjustment, automated production and interactive editing of stereo digital terrain models (DTMs), orthomos...