Estimating its ego-motion is one of the most important capabilities for an autonomous mobile platform. Without reliable ego-motion estimation no long-term navigation is possible. Besides odometry, inertial sensors, DGPS, laser range finders and so on, vision based algorithms can contribute a lot of information. In this paper, we want to give an integrated overview of stereo odometry. We want to...

The Terrain Resources Inventory Mapping (TRIM) data standard in BC, Canada, includes speci cations for river data and elevation data that are typically met by interpretation of stereo orthophotos. It does not specify that breaklines for watersheds be interpreted from the photos, thus we must extract them from the data. We seek a system of watersheds that, while not exact due to errors in the da...

During the last decade a methodology for the reconstruction of surface relief by Synthetic Aperture Radar (SAR) measurements - SAR interferometry - has become a standard. Different techniques developed before, such as stereo-radargrammetry, have been experienced from space only in very limiting geometries and time series, and, hence, branded as less accurate. However, novel formation flying con...

We propose an obstacle detection method based on trinocular stereo vision which consist of vertical and horizontal stereo cameras. Vertical edges and horizontal edges are extracted from horizontal stereo images and vertical stereo images. Then the edges are used to generate U-V-disparity maps. A rectangular obstacle has a characteristic that it is represented as a vertical line in V-disparity m...

In this paper we propose a method that smartly improves occlusion handling in stereo matching using trinocular stereo. The main idea is based on the assumption that any occluded region in a matched stereo pair (middle-left images) in general is not occluded in the opposite matched pair (middle-right images). Then two disparity space images (DSI) can be merged in one composite DSI. The proposed ...

Over the last 40 years, underwater videometric measurement systems have employed stereocameras and single cameras in a variety of configurations. Both still and movie cameras have been used, based on film, video tube and digital sensors. Whilst measurement configurations of all varieties have been used, the transect has been, and still is, the predominant sampling technique. These basic approac...

PURPOSE We recorded with intracerebral electrodes the onset of limbic seizures in patients with mesial temporal lobe epilepsy (MTLE) to identify the dynamic interactions between the hippocampus (HIP), amygdala (AMY) and entorhinal cortex (EC). METHODS Interactions were quantified by analyzing the interdependencies between stereo-electroencephalographic (SEEG) signals using a nonlinear cross-c...

Investigations on the use of stereo GEO and multitemporal GEO Ikonos images for DSM generation are reported. Both an own developed matching algorithm and the digital photogrammetric systems LH Systems DPW770 and VirtuoZo were used. In our own matching method, we start with quasi-epipolar image generation, and derivation of approximations using grid point matching based on relaxation. The final ...

Laughter and smile are typical expressions of mirth and fundamental means of social communication. Despite their general interest, the current knowledge about the brain regions involved in the production of these expressions is still very limited, and the principal insights come from electrical stimulation (ES) studies in patients, in which, nevertheless, laughter or smile have been elicited ve...

Although considerable progress has been made within the last decade in experimental hydrodynamic analyses of aquatic locomotion using two-dimensional digital particle image velocimetry (two-dimensional DPIV), data have been limited to simultaneous calculation of two out of the three flow velocity variables: downstream (U), vertical (V) and lateral (W). Here, we present the first biological appl...