A Theory of Single-Viewpoint Catadioptric Image Formation
International Journal of Computer Vision
Catadioptric Omnidirectional Camera
CVPR '97 Proceedings of the 1997 Conference on Computer Vision and Pattern Recognition (CVPR '97)
A Generic Camera Calibration Method for Fish-Eye Lenses
ICPR '04 Proceedings of the Pattern Recognition, 17th International Conference on (ICPR'04) Volume 1 - Volume 01
A Flexible Technique for Accurate Omnidirectional Camera Calibration and Structure from Motion
ICVS '06 Proceedings of the Fourth IEEE International Conference on Computer Vision Systems
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Omni-camera is almost near or even beyond a full hemisphere, it is popularly applied in the fields of visual surveillance, and vision-based robot or autonomous vehicle navigation. The captured omni-directional image should be rectified into a normal perspective-view or panoramic image for convenient human viewing or image-proof preservation. It develops a real-time system to supervise the situation of the indoor environments. This surveillance system combines a panoramic video camera and three active PTZ cameras. We use the omnidirectional video that is caught by panoramic video camera as input to track the moving subjects in an indoor room. We can automatically track the moving subjects or manually find the moving subjects. The coordinate of each subject in the indoor room is estimated in order to direct the attention of one active pan-tilt-zoom camera. When we find the moving subjects automatically or manually, this system can automatically control these PTZ cameras to obtain the high-resolution images and video sequences of moving subjects. Compared with the other kinds of tracking systems, our system can more easily enlarge the monitoring area by adding cameras. The experimental results show that those moving object can be tracked exactly and can be integrated with the guiding system very well.