Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate
2006-05-30
2006-05-30
Lee, Michael G. (Department: 2876)
Registers
Coded record sensors
Particular sensor structure
C235S462270, C235S462290
Reexamination Certificate
active
07051937
ABSTRACT:
A system and method to binarize the bar code image in the presence of noise in order to render bar codes more detectable in the presence of noise. The method of this invention includes the steps of applying a gradient detecting filter to the bar code image, obtaining a filtered image, and then, adaptively binarizing the bar code image utilizing the corresponding filtered image to obtain an adaptive threshold. A system that implements the method is also described.
REFERENCES:
patent: 4323772 (1982-04-01), Serge
patent: 4561022 (1985-12-01), Bayer
patent: 4777357 (1988-10-01), Harada et al.
patent: 5296690 (1994-03-01), Chandler et al.
patent: 5367578 (1994-11-01), Golem et al.
patent: 5563955 (1996-10-01), Bass et al.
patent: 5600118 (1997-02-01), Sato et al.
patent: 5661288 (1997-08-01), Keinath et al.
patent: 5710875 (1998-01-01), Harashima et al.
patent: 5756981 (1998-05-01), Roustaei et al.
patent: 5805740 (1998-09-01), Takagi et al.
patent: 5864129 (1999-01-01), Boyd
patent: 5877486 (1999-03-01), Maltsev et al.
patent: 5969325 (1999-10-01), Hecht et al.
patent: 5979768 (1999-11-01), Koenck
patent: 6508405 (2003-01-01), Tang et al.
patent: 6556313 (2003-04-01), Chang et al.
patent: 2002/0118887 (2002-08-01), Gindele
patent: 2002/0141003 (2002-10-01), Chang et al.
patent: 0996079 (2000-04-01), None
patent: 1182604 (2002-02-01), None
V. Wu, R. Manmatha, “Document Image Clean Up and Binarization”, available at http://citeseer.nj.nec.com/43792.html.
J. S. Lim,Two Dimensional Signal and Image Processing, ISBN 0-13-935322-4, pp. 476-490.
R. C. Gonzalez, P. Wintz,Digital Image Processing, ISBN 0-201-02597-3, 1977, pp. 337-344.
Ø.D. Trier and T. Taxt, “Evaluation of binarization methods for document images”, available at http://citeseer.nj.nec.com/trier95evaluation.html, also a short version published in IEEE Transatcions on Pattern Analysis and Machine Intelligence, 17, pp. 312-315, 1995.
Albertelli Lawrence E.
Ii David L.
Kung Nina
Burns & Levinson LLP
Erlich Jacob N.
Koyama Kumiko C.
Lee Michael G.
Lockheed Martin Corporation
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