Feature design for HMM based Eastern Asian character...

Image analysis – Pattern recognition – On-line recognition of handwritten characters

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07974472

ABSTRACT:
An exemplary method for online character recognition of East Asian characters includes acquiring time sequential, online ink data for a handwritten East Asian character, conditioning the ink data to produce conditioned ink data where the conditioned ink data includes information as to writing sequence of the handwritten East Asian character and extracting features from the conditioned ink data where the features include a tangent feature, a curvature feature, a local length feature, a connection point feature and an imaginary stroke feature. Such a method may determine neighborhoods for ink data and extract features for each neighborhood. An exemplary Hidden Markov Model based character recognition system may use various exemplary methods for training and character recognition.

REFERENCES:
patent: 5034989 (1991-07-01), Loh
patent: 5212769 (1993-05-01), Pong
patent: 5285505 (1994-02-01), Kim et al.
patent: 5459809 (1995-10-01), Kim et al.
patent: 5588073 (1996-12-01), Lee et al.
patent: 5621809 (1997-04-01), Bellegarda et al.
patent: 5644652 (1997-07-01), Bellegarda et al.
patent: 5659633 (1997-08-01), Ilan et al.
patent: 5708727 (1998-01-01), Tanaka et al.
patent: 5745599 (1998-04-01), Uchiyama et al.
patent: 5757960 (1998-05-01), Murdock et al.
patent: 6084985 (2000-07-01), Dolfing et al.
patent: 6226403 (2001-05-01), Parthasarathy
patent: 6389166 (2002-05-01), Chang et al.
patent: 6430314 (2002-08-01), Ko
patent: 6891971 (2005-05-01), Loudon et al.
patent: 7164793 (2007-01-01), Williams et al.
patent: 7203903 (2007-04-01), Thompson et al.
patent: 2001/0052900 (2001-12-01), Lee
patent: 2002/0118879 (2002-08-01), Hickerson et al.
patent: 20000036398 (2000-05-01), None
Lee, et al., “Data-driven Design of HMM Topology for On-line Handwriting Recognition”, available at least as early as Apr. 30, 2007, at <<http://citeseer.ist.psu.edu/cache/papers/cs/19211/http:zSzzSzai.kaist.ac.krzSzPublicationzSzPaperzSzIJPRAI-15-1-JayLee.PDF/Iee00datadriven.pdf>>, pp. 1-14.
Nathan, et al., “Real-Time On-Line Unconstrained Handwriting Recognition using Statistical Methods”, available at least as early as Apr. 30, 2007, at <<http://www.recognitiontechnologies.com/˜beigi/ps/icassp95.ps>>, pp. 1-4.
Tapia, et al., “A Survey on Recognition of On-Line Handwritten Mathematical Notation”, available at least as early as Apr. 30, 2007, at <<http://www.inf.fu-berlin.de/inst/pubs/techreport-B-07-01.pdf>>, Jan. 2007, pp. 1-17.
Tappert, et al., “The State of the Art in On-Line Handwriting Recognition”, available at least as early as Apr. 30, 2007, at <<http://csis.pace.edu/˜ctappert/dps/pdf/pen-tappert.pdf>>, IEEE, vol. 12, No. 8, Aug. 1990, pp. 786-808.
PCT Search Report for PCT Application No. PCT/US2008/068068, mailed Jun. 24, 2008 (10 pages).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Feature design for HMM based Eastern Asian character... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Feature design for HMM based Eastern Asian character..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Feature design for HMM based Eastern Asian character... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2712069

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.