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NAIST Application NoP05-07



TitleMETHOD FOR ESTIMATING CONNECTION RELATION AMONG WIDE-AREA DISTRIBUTED CAMERA AND PROGRAM FOR ESTIMATING CONNECTION RELATION
INVENTORUKITA, Norimichi; (JP).
Pub.NoWO/2007/026744Pub Date08.03.2007
International Application NoPCT/JP2006/317067International Application Date 30.08.2006

abstractAn estimating method and program for estimating the connection relation among distributed cameras to use the estimated relation for monitoring and tracking many object in a wide area. The feature of the invention is not to need any object association among cameras by recognition of a camera image. Each camera independently detects and tracks objects entering/exiting an observation image, and the image coordinates and times of the moments when each object is detected first and last in the image are acquired. All the acquired data observed by each camera is tentatively associated with all the acquired data observed by all the cameras before the detection of all the acquired data observed by the each camera, and the associated items of the data associated for each elapsed time are counted. By using the fact that the elapsed time of correctly associated data with the movement of the same object has a significant peak in the histogram showing the relation between the elapsed time and the number of observations, the connection relation among the fields of view of cameras (presence/absence of overlap between fields of view, image coordinates at which entrance/exit occurs, elapsed time, and pass probability) is acquired according to be peak detection result.
National PhaseJP 27.02.2008 2007533280