Marking physical objects and related systems and methods
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United States of America Patent
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Apr 11, 2006
Grant Date -
Jun 26, 2003
app pub date -
Sep 11, 2002
filing date -
Oct 5, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention provides techniques whereby objects are readily identified. These inventive techniques are ideally suited for traffic monitoring. In one implementation a vehicle is marked with a machine-readable code on an outer, top surface of the vehicle. An elevated or aerial platform captures an image of the vehicle. A detector analyzes the captured image to recover the machine-readable code. The vehicle is identified from such. Traffic congestion can be determined by monitoring the movement of a marked vehicle through the city traffic. In some implementations the machine-readable code comprises an identifier, which is used to interrogate a database for related information.
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