Pattern matching using projection kernels
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United States of America Patent
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Feb 27, 2007
Grant Date -
Jul 1, 2004
app pub date -
Dec 26, 2002
filing date -
Dec 26, 2002
priority date (Note) -
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Abstract
Pattern matching apparatus for comparing signal samples with a pattern to find signal samples substantially matching said pattern, the apparatus comprising: a projector for projecting said signal samples over a tree of projection vectors of successively increasing frequency at nodes of said tree to successively provide projection values, a distance measurer, associated with an output of said projector for determining a distance between a projection value and a corresponding projection value of said pattern, said distance being an expression of a minimum bound of a true distance between said sample and said pattern, and a thresholder, associated with an output of said distance measurer for applying a threshold to said minimum bound to successively reject samples at respective nodes.
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