Mit der vorliegenden Arbeit wird eine Verbesserung des MAGIC (Manual And Gaze Input Cascaded) Pointing vorgestellt. Die Idee hinter dem MAGIC-Pointing ist die Positionierung des Mauszeigers auf die Blickposition auf dem Bildschirm bei der ersten Bewegung der Maus nach einer Ruhephase. Die Problematik beim MAGIC-Pointing liegt darin, dass die initiierte Mausbewegung dazu führt über das Ziel hina...

The TanDEM-X mission will derive a global digital elevation model (DEM) with satellite SAR interferometry. The aimed accuracies are an absolute, resp. relative height error of 10m resp. 2m for 90% of the data. This paper gives an overview of the DEM adjustment within the TanDEM-X mission. The DEM adjustment estimates residual, systematic height offsets and deformations of each single interferom...

This paper evaluates the suitability of readily available elevation data derived from recent sensors – the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and the Shuttle Radar Topography Mission (SRTM) – for glaciological applications. The study area is Nevado Coropuna (6426 m), situated in Cordillera Ampato of Southern Peru. The glaciated area was 82.6 km in 1962, based...

This paper presents a methodology of image orientation and DEM extraction from ALOS-PRISM stereopairs without the use of GCPs. It uses the approximate geo-location information derived from the sensor navigation instruments and the SRTM-DEM. The method consists in the extraction of a relative DEM, which initially is not correctly geo-referenced. This relative DEM is then matched to the SRTM-DEM,...

Recently software libraries known as physics engines have begun to gain interest within the computing communities. They are designed primarily for use within the computer game industry but also currently find credence within real-time animation and robotics simulation. The technical requirements of a Discrete Element Model (DEM) are markedly similar to that of a gaming rigid body problem. A DEM...

The Orbiting Carbon Observatory (OCO), scheduled for launch in December 2008, will make the first space-based measurements of atmospheric CO2 with the precision, spatial and temporal resolution needed to characterize CO2 sources and sinks on regional spatial scales and seasonal to interannual time scales. Variations in surface topography have a direct impact on the retrieval of the columnaverag...

The quality and accuracy of DEMs derived from repeatpass InSAR is limited by atmospheric phase screen (APS) difference and decorrelation between SAR images. In this paper, we show a compromising but effective approach to avoid DEM gaps and remove height errors induced by the atmosphere. Existing low resolution DEMs are used as external data to improve the quality of interferometric DEM. Our app...

ASTER is a high-spatial resolution, multispectral imaging system flying aboard TERRA, a satellite launched in December 1999 as part of NASA’s Earth Observing System (EOS). An ASTER scene covering 61.5 km x 63 km contains data from 14 spectral bands. An ASTER Digital Elevation Model (DEM) is generated using bands 3N (nadir) and 3B (backward) level 1A images acquired by the Visible Near Infra-red...

PURPOSE This pilot study sought to determine the efficacy of using the Developmental Eye Movement (DEM) test in the adult, acquired brain injury (ABI) population to quantify clinically the effects of controlled, laboratory-performed, oculomotor-based vision therapy/vision rehabilitation. METHODS Nine adult subjects with mild traumatic brain injury (mTBI) and five with stroke were assessed bef...