Image analysis – Pattern recognition
Reexamination Certificate
2004-03-12
2008-12-30
Kim, Charles (Department: 2624)
Image analysis
Pattern recognition
C382S176000, C382S290000
Reexamination Certificate
active
07471830
ABSTRACT:
Disclosed is a device and method for recognizing characters in an image. An input part receives the image. A blurring decision part classifies the received image into character blocks and background blocks, calculates an average energy ratio of the character blocks, and compares the average energy ratio with a predetermined threshold to determine whether the received image is blurred. If the received image is not blurred, an image binarization part classifies the received image into character blocks and background blocks, compares pixels in the character blocks with a pixel threshold, binarizes the pixels in the character blocks into a brightness value for a character pixel and a brightness value for a background pixel based on the comparison, and binarizes pixels in the background blocks into the brightness value for a background pixel. A character recognition part recognizes characters in the binarized image.
REFERENCES:
patent: 5535013 (1996-07-01), Murata
patent: 5809183 (1998-09-01), Serizawa et al.
patent: 5949916 (1999-09-01), Chun
patent: 5995657 (1999-11-01), Sunakawa
patent: 6415064 (2002-07-01), Oh
patent: 6449384 (2002-09-01), Laumeyer et al.
patent: 2004/0120598 (2004-06-01), Feng
patent: 2004/0252890 (2004-12-01), Lim et al.
patent: 08-221512 (1996-08-01), None
Automatic Caption Localization In Compressed Video; Yu Zhong et al.; pp. 385-392.
Extraction Of Unconstrained Caption Text From General-Purpose Video; David J. Crandall; May 2001; pp. 1-121.
Adaptive, Quadratic Preprocessing Of Document Images For Binarization; San Mo et al.; pp. 992-999.
A Noise-Smoothing Nonlinear Operator For The Preprocessing Of Text And Graphics Images; G Ramponi; pp. 242-245.
A Fast High Precision Algorithm For The Estimation Of Skew Angle Using Moments; George Kapogiannopoulos et al.; pp. 1-5.
Automatic Text Skew Estimation In Document Images; Su Chen et al.; pp. 1153-1156.
Detection Of Text Captions In Compressed Domain Video; Yi Zhang et al.; pp. 201-204.
Jang Ick-Hoon
Kim Chong-Heun
Kim Hwan
Kim Nam-Chul
Lim Chae-Whan
Kim Charles
Roylance Abrams Berdo & Goodman LLP
Samsung Electronics Co,. Ltd.
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