In this paper we introduce an approach for automatic recognition and reconstruction of building facade structure from oblique aerial images. Contrast to street-view image oblique aerial image has larger field of view but lower resolution, weaker texture and more noise. To overcome these shortcomings, our approach firstly analyses the horizontal distribution density to extract individual facade ...

—Scoters (Melanitta spp.) exhibit extraordinary maneuvers during courtship flight, attitudes which are not commonly seen in flight. Scoters drop their legs and spread webbed feet during these maneuvers. There appears to be a correlation between how the feet of scoters meet the airflow and the maneuver in progress. Received 25 April 2007. Accepted 5 Au-

This paper presents our distributed approach to dynamically assign new goals to a fleet of Unmanned Aerial Vehicles (UAVs). Decisions to assign new goals are not instantaneous and they tend to become obsolete because UAVs move continuously. We use the date of commitment to handle this. This paper introduces how we use a function relating the arrival date to the date of commitment in order to po...

Species information is a key component of any forest inventory. However, when performing forest inventory from aerial scanning Lidar data, species classification can be very difficult. We investigated changes in classification accuracy while identifying five individual tree species (Douglas-fir, western redcedar, bigleaf maple, red alder, and black cottonwood) in the Pacific Northwest United St...

Due to the limited accuracy of exterior orientation parameters, ground control points (GCPs) are commonly required to correct the geometric biases of remotely-sensed (RS) images. This paper focuses on an automatic matching technique for the specific task of georeferencing RS images and presents a technical frame to match large RS images efficiently using the prior geometric information of the i...

We present a technique for simulating variations in appearance of aerial images at different sun angles. The input to the algorithm is a single aerial image with information on the orientation of surfaces in the image. The location, date, and time at which the photograph was taken are also needed by the algorithm. The appearance of the aerial image at a new sun angle is synthesized by compensat...

Open jet testing is a valuable testing technique which provides the desired results with reasonable accuracy. It has been used in past for the airships and now has recently been applied for the hybrid ones, having more non-buoyant force coming from the wings, empennage and the fuselage. In the present review work, an effort has been done to review the challenges involved in open jet testing. In...