Matching apparatus, image search system, and histogram approximate restoring unit, and matching method, image search method, and histogram approximate restoring method
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United States of America Patent
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Jul 19, 2011
Grant Date -
Aug 14, 2008
app pub date -
May 11, 2007
filing date -
Nov 8, 2005
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Abstract
A matching technology for determining the similarity between two objects at high velocity with high precision. The matching method for comparing a set of feature points of two objects projected to an N-dimensional space and determining the similarity between the two objects, includes a mapping step of mapping the set to a one-dimensional space, a pairing step of creating a set of pairs of a feature point of first object that is the most approximate to a feature point of second object, a partial-set creating step of partly extracting the pairs in small order of the pair distance from the set of the pairs of the feature points and creating a partial set of the pairs of the feature points, an average-value calculating step, and a determining step of determining the similarity on the basis of an average value of the distance.
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