Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1993-12-17
1995-02-07
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358404, 358451, 358455, G03F 308
Patent
active
053879856
ABSTRACT:
The present invention is a method and apparatus for converting the resolution of bitmap images, and more specifically, to the use of a template matching process to alter the resolution of digital images for printing or similar methods of rendition. The present invention uses statistically generated templates, implemented using look-up tables, to improve document appearance upon output by converting from an original or input spatial resolution to an output spatial resolution that is device dependent, and where there is a non-integer relationship between the input and output resolutions. The resulting image signals may then be utilized to control a scanning beam where the beam varies in intensity and duration according to the pulses used to control it.
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Cianciosi Michael S.
Klassen R. Victor
Loce Robert P.
Coles Sr. Edward L.
Ning John
Xerox Corporation
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