Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2005-09-27
2005-09-27
Lee, Thomas D. (Department: 2624)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C359S001000, C359S003000, C359S003000
Reexamination Certificate
active
06950210
ABSTRACT:
A method for binarizing an image that includes initializing, for each column of the image, a first set of variables representing a local column low pixel value and a local column high pixel value, and, for each row of the image, a second set of variables representing a local row low pixel value and a local row high pixel value. The following steps are iterated for each pixel: determining a threshold value dependent upon the first and second sets of variables at the current pixel location, comparing a value representative of an image pixel at the current pixel location with the determined threshold value, and setting a binarization pixel for the current pixel location to one of two values, dependent upon results of the comparison, and adjusting values included in the first set of variables and the second set of variables dependent upon the results of the comparison.
REFERENCES:
patent: 4823194 (1989-04-01), Mishima et al.
patent: 5138671 (1992-08-01), Yokoyama
patent: 5184213 (1993-02-01), Ishida
patent: 5200841 (1993-04-01), Kotaki et al.
patent: 5201012 (1993-04-01), Hisano et al.
patent: 5268773 (1993-12-01), Park et al.
patent: 5452107 (1995-09-01), Koike
patent: 5621815 (1997-04-01), Talukdar et al.
patent: 5784500 (1998-07-01), Homma et al.
patent: 5838463 (1998-11-01), Gahang
patent: 5915049 (1999-06-01), Kaji et al.
patent: 5949901 (1999-09-01), Nichani et al.
patent: 6055336 (2000-04-01), Niki
patent: 6061476 (2000-05-01), Nichani
patent: 6072907 (2000-06-01), Taylor et al.
patent: 6192163 (2001-02-01), Murayama
patent: 6195467 (2001-02-01), Asimopoulos et al.
patent: 6498660 (2002-12-01), Haltmaier
Gonzalez and Woods, Digital Image Processing, Section 7.3, pp. 443-458, 1992.
Academic Press Limited, Machine Vision, Section 4.3, pp. 79-99, 1990.
Guo Jinhong K.
Zhang Yichun
Harness Dickey & Pierce PLC
Lee Thomas D.
Thompson James A
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