Ink reduction error diffusion

Details Ink reduction error diffusion Ink reduction error diffusion

2007-05-29

2007-05-29

Rogers, Scott A. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003260, C358S534000

Reexamination Certificate

active

10350121

ABSTRACT:
A method and apparatus for performing ink reduction error diffusion are described. In one embodiment, the method comprises performing vector error diffusion and mapping anchors to printing colors, where performing vector error diffusion includes quantizing each input pixel value to a closest anchor in an anchor set, calculating errors based on differences between the input pixel values and the anchors, and performing error filtering based on calculated errors.

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