The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 16, 2016

Filed:

Apr. 29, 2015
Applicant:

Xerox Corporation, Norwalk, CT (US);

Inventors:

Palghat S. Ramesh, Pittsford, NY (US);

Vladimir Kozitsky, Rochester, NY (US);

Aaron Michael Burry, Ontario, NY (US);

Assignee:

Xerox Corporation, Norwalk, CT (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01); G06K 9/32 (2006.01); G06K 9/78 (2006.01);
U.S. Cl.
CPC ...
G06K 9/3258 (2013.01); G06K 9/3241 (2013.01); G06K 9/78 (2013.01); G06K 2209/01 (2013.01); G06K 2209/15 (2013.01);
Abstract

A segmentation free method and system for automatic license plate recognition. An OCR classifier can be swept across an image of a license plate. Characters and their locations can be inferred with respect to the image of the license plate using probabilistic inference based on a Hidden Markov Model (HMM). A language model can be combined with a license plate candidate from the HMM to infer the optimal or best license plate code. The language model can be configured by employing a corpus of license plate codes, wherein the corpus includes a distribution representative of training sets and tests sets.


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