Apparatus and method for measuring queue length of vehicles
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United States of America Patent
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N/A
Issued Date -
Oct 9, 2003
app pub date -
Mar 24, 2003
filing date -
Apr 4, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In an apparatus and a method for measuring a queue length of vehicles, by installing a camera toward a direction same with a proceeding direction of vehicles on the road, photographing images of the road at the rear of vehicles and measuring a queue length of vehicles, it is possible to measure a queue length of vehicles accurately. The apparatus includes a camera for photographing the rear of vehicles on the road; an image converter for converting analog image signals corresponding to images photographed by the camera into digital image signals; and a control unit for extracting characteristics of vehicles from the converted digital images, calculating positions of vehicles on the road on the basis of the extracted characteristics and calculating a queue length of vehicles on the road on the basis of the calculated positions of vehicles.
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