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Navigation, Guidance, Control, and Dynamics Commons™
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- Buoys (1)
- Circular objects (1)
- Color (1)
- Color information (1)
- Edge image (1)
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- False detections (1)
- Feedback control (1)
- Highway traffic control systems (1)
- Hough transforms (1)
- Incident management (1)
- Low cost methods (1)
- Nonholonomic systems (1)
- Real images (1)
- Real time information (1)
- Secondary incidents (1)
- Statistical analysis (1)
- Surface vessels (1)
- Unmanned vehicles (1)
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Articles 1 - 3 of 3
Full-Text Articles in Navigation, Guidance, Control, and Dynamics
Nonholonomic Feedback Control Among Moving Obstacles, Stephen Gregory Armstrong
Nonholonomic Feedback Control Among Moving Obstacles, Stephen Gregory Armstrong
Doctoral Dissertations and Master's Theses
A feedback controller is developed for navigating a nonholonomic vehicle in an area with multiple stationary and possibly moving obstacles. Among other applications the developed algorithms can be used for automatic parking of a passenger car in a parking lot with complex configuration or a ground robot in cluttered environment. Several approaches are explored which combine nonholonomic systems control based on sliding modes and potential field methods.
Marine Buoy Detection Using Circular Hough Transform, Loc Tran, Justin Selfridge, Gene Hou, Jiang Li
Marine Buoy Detection Using Circular Hough Transform, Loc Tran, Justin Selfridge, Gene Hou, Jiang Li
Electrical & Computer Engineering Faculty Publications
A low cost method for buoy detection in maritime settings is presented using inexpensive digital cameras. In this method, the circular Hough transform is applied to an edge image to circular objects in the image. The center of these circles will signify the locations of each buoy. The known color information of the buoys is also used to enhance the performance by removing false detections. The algorithm is compared to an approach that locates buoys purely on color information. In order to validate the method, we test the approach synthetically and also with real images captured from a small surface …
Primary And Secondary Incident Management: Predicting Durations In Real Time, Asad J. Khattak, Xin Wang, Hongbing Zhang, Mecit Cetin
Primary And Secondary Incident Management: Predicting Durations In Real Time, Asad J. Khattak, Xin Wang, Hongbing Zhang, Mecit Cetin
Civil & Environmental Engineering Faculty Publications
Traffic incidents are a major source of congestion in Virginia. Secondary incidents comprise a relatively small but important portion of all incidents, and relatively little is known about their occurrence, characteristics, and associated delays. The main objectives of this study were to define secondary incidents, understand and analyze the occurrence and nature of such incidents, and develop tools that can comprehensively and continuously analyze primary and secondary incidents at the planning and operational levels, ultimately contributing to congestion management. The scope of the study is limited to freeway incidents in the Hampton Roads (HR) area. The study found that secondary …