Black white image compression having print density control

Image analysis – Image transformation or preprocessing – Changing the image coordinates

Reexamination Certificate

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C382S232000

Reexamination Certificate

active

07809213

ABSTRACT:
A scaling system for compressing a bitonal image that has print density control. A system is disclosed that comprises: a pixel reduction system that generates a scaled image by reducing pixel pairs down to single scaled pixel based on a set of scaling rules; and a line density control system that allows the scaled image to be made lighter, normal or darker by changing the scaling rules.

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