Image analysis – Pattern recognition
Patent
1994-03-31
1995-08-01
Razavi, Michael T.
Image analysis
Pattern recognition
382229, 36441913, G06K 900
Patent
active
054386284
ABSTRACT:
A first method for exact and inexact matching of documents stored in a document database includes the step of converting the documents in the database to a compacted tokenized form. A search string or search document is then converted to the compact tokenized form and compared to determine if the test string occurs in the documents of the database or whether the documents in the database correspond to the test document. A second method for inexact matching of a test document to the documents in the database includes generating sets of one or more floating point values for each document in the database and for the test document. The sets of floating point numbers for the database are then compared to the set for the test document to determine a degree of matching. A threshold value is established and each document in the database which generates a matching value closer to the test document that the threshold is considered to be an inexact match of the test document.
REFERENCES:
patent: 5119327 (1992-06-01), Skinner
Francine R. Chen et al.; "Detecting and Locating Partially Specified Keywords in Scanned Images using Hidden Markov Models;" 1993 IEEE; pp. 133-138.
Dias Antonio P.
Spitz A. Lawrence
Fuji Xerox Corporation
Park Baeil P.
Razavi Michael T.
Xerox Corporation
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