Method and Apparatus for Analyzing Thermo-Graphic Images to Detect Defects in Thermally Sealed Packaging
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United States of America Patent
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Issued Date -
Oct 11, 2007
app pub date -
Apr 5, 2007
filing date -
Apr 6, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of monitoring and detecting thermal sealing defects includes capturing a thermal image of a thermal seal, obtaining a reference thermal image corresponding to an acceptable thermal seal, converting the captured thermal image to a first sequenced set of pixel values, converting the reference thermal image to a second sequenced set of pixel values, defining a plurality of regions such that each region includes a plurality of sequence numbers such that each sequence number is a sequence number of a pixel value in the first sequenced set, generating a sequenced set of differential values such that each differential value is associated with the first ordered set of pixel values and with the second ordered set of pixel values, and analyzing the sequenced set of differential values.
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