Asymmetrical digital filters for dot gain adjustments

Details Asymmetrical digital filters for dot gain adjustments Asymmetrical digital filters for dot gain adjustments

2007-05-29

2010-11-02

Lee, Thomas D (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003050, C358S003300

Reexamination Certificate

active

07826097

ABSTRACT:
A method for adjusting dot-gain for a halftone binary bitmap file comprises inputting a halftone binary bitmap file consisting of binary pixels (400) to an asymmetric digital filter (500). The binary pixels are filtered with the asymmetric digital filter and generates multi-level pixels (506). The multi-level pixel are compared to a preset level (408) and generates a binary pixel output (410). The binary pixel output is collected and forms an adjusted halftone binary bitmap file (270).

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