Automated system for identifying and dimensioning packages transported through a laser scanning tunnel using laser scanning beam indexing techniques
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United States of America Patent
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-
Feb 11, 2003
Grant Date -
Aug 23, 2001
app pub date -
Sep 21, 1998
filing date -
Dec 18, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A fully automated package identification and measuring system, in which an omni-directional holographic scanning tunnel is used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathematical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.
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