Image processing apparatus and method for performing shade...

Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry

Reexamination Certificate

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Details

C358S462000, C358S463000, C358S448000, C358S453000

Reexamination Certificate

active

07948662

ABSTRACT:
Generation of an electronic document which leaves density difference information between the background of a document and a correcting liquid applied surface is in demand. Hence, upon reading a document image and converting it into an electronic document, the background density of the document is read from the read image, and a lower density region having a density lower than the background density is extracted from the read image using the background density.

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