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In this paper, an offline perching location selection (from roof-tops) algorithm is developed for quadrotor UAVs to monitor a target, being either a point of interest (POI) or a face of interest (FOI). The selection algorithm is carried out in two steps, preliminary selection and precise selection. In the preliminary selection stage, geometric constraints, including UAV dimension, camera range, roof...
Calibrating roadside camera is essential and indispensable for intelligent traffic surveillance systems. Due to the characteristics of the traffic scenes, the traditional camera calibration methods based on calibration patterns are no longer suitable, since there are generally no calibration patterns (e.g. checkerboard) in traffic scenes. In this paper, we propose a simple and practical calibration...
In this paper, the problem of mission planning with UAVs for urban surveillance is studied. The target is to guide a group of UAVs equipped with cameras to fly over an urban area (possibly hostile) to provide complete surveillance coverage in an optimal manner. The camera, mounted on gimbals fixed to the UAVs, has the capability of panning and tilting. Thus, not only the trajectory of the UAVs, but...
The Frequent Image Frames Enhanced Digital Orthorectified Mapping (FIFEDOM) camera was designed to provide a cost-effective remote-sensing method for accurate acquisition of forest information, such as spatial distributions of individual tree species and tree structures for forest monitoring and management. Compared with existing regular digital cameras, the FIFEDOM camera has several unique features...
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