Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2008-04-08
2008-04-08
Poon, King Y. (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S001900, C358S002100, C358S003270, C358S532000, C382S261000, C382S199000, C382S266000, C382S263000, C382S260000
Reexamination Certificate
active
10188133
ABSTRACT:
An image processing apparatus includes an edge amount calculating device configured to calculate edge amounts of an image in a plurality of directions for each of a plurality of frequency bands of the image. A character edge area determination device determines, based on the calculated edge amounts, whether or not a selected picture element of the image is of a character edge area. A sharpness control device corrects a frequency characteristic of the image by performing a first correction to the edge amounts when the selected picture element is determined to be of a character edge area by the character edge area determining device, and by performing a second correction to the edge amounts when the selected picture element is determined not to be of a character edge area by the character edge area determining device.
REFERENCES:
patent: 5032903 (1991-07-01), Suzuki et al.
patent: 5251023 (1993-10-01), Arimoto et al.
patent: 5339365 (1994-08-01), Kawai et al.
patent: 5477346 (1995-12-01), Murata
patent: 5825937 (1998-10-01), Ohuchi et al.
patent: 5832128 (1998-11-01), Suzuki
patent: 6480300 (2002-11-01), Aoyama
patent: 6754398 (2004-06-01), Yamada
patent: 06-223172 (1994-08-01), None
patent: 07-021313 (1995-01-01), None
Morimoto Etsuo
Shibaki Hiroyuki
Suino Tooru
Dickstein & Shapiro LLP
Kau S.
Poon King Y.
Ricoh & Company, Ltd.
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