Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2004-06-23
2008-10-28
Coles, Edward L (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S003050, C358S003060
Reexamination Certificate
active
07443542
ABSTRACT:
Provided are a method and apparatus for determining error diffusion coefficients. The method includes: (a) setting N groups of error diffusion coefficients (N is a positive integer), in which each group includes a plurality of coefficients; (b) binarizing an image having one gray level value using each of the N groups of error diffusion coefficients; (c) detecting N fit values with respect to N binary-coded images using an evaluation function; (d) determining whether the fit values are detected a predetermined number of times; (e) when a detection number of the fit values does not coincide with the predetermined number of times, reproducing the N groups of error diffusion coefficients according to reproduction rates determined by the N fit values; (f) selecting optional error diffusion coefficients in the reproduced N groups of error diffusion coefficients, and substituting portions of data of selected error diffusion coefficients with each other; and (g) determining the N groups of error diffusion coefficients including the error diffusion coefficients containing substituted data as new error diffusion coefficients, and returning to step (b).
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Gahang Goo-soo
Kang Ki-min
Kim Choon-woo
Seo Hyeon-seok
Coles Edward L
Roylance Abrams Berdo & Goodman L.L.P.
Samsung Electronics Co,. Ltd.
Thompson James A
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