Image processing apparatus and method for eliminating background

Details Image processing apparatus and method for eliminating background Image processing apparatus and method for eliminating background

1993-07-06

1996-01-30

Rogers, Scott A.

Facsimile and static presentation processing

Natural color facsimile

Image reproduction

358537, 358538, 358401, 358452, 358453, 358464, 382163, 382171, 382275, H04N 138

Patent

active

054884918

ABSTRACT:
A reproduction apparatus such as one having an electronic electrophotographic marking engine includes an image scanning device for scanning and outputting signals representing image density data on a document. An area designating device such as a digitizing tablet is provided for generating signals representing information relative to a selected image area of the document containing both foreground and background density. A processor is responsive to the density and area signals for operating on the image data in the area to define clipping signals representing parameters for substantially eliminating the background density while substantially preserving information with foreground density.

REFERENCES:
patent: 4907286 (1990-03-01), Yamada
patent: 4975768 (1990-12-01), Takaraga

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