Bi-level to contone data conversion

Details Bi-level to contone data conversion Bi-level to contone data conversion

1998-01-23

2000-08-01

Evans, Arthur G.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 11, G06K 1500

Patent

active

060975032

ABSTRACT:
A look-up table of ink density values corresponding to a predetermined number of printed bit patterns is used to convert a high resolution bi-level data file into a lower resolution contone data file. A method to convert bi-level data to contone data includes reading a specified number of words from the bi-level data and retrieving, for each word, an ink density value from the look-up table using the word as an index into the table.

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patent: 5687300 (1997-11-01), Cooper
Daun, S., CIP3 Print Production Format Information Material, Fraunhofer Institute for Computer Graphics, version 1.0, Sep. 6, 1995.
Daun et al., Digital Document Production, date unknown.
Daun et al., Specification of the CIP3 Print Production Format, Fraunhofer Institute for Computer Graphics, version 2.1, May 27, 1997.
Lucas et al., Format, date unknown.
CIP3 Print Production Format (PPF)--workflow doesn't stop at prepress!, date unknown.

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