Image reader for processing an image of a document

Details Image reader for processing an image of a document Image reader for processing an image of a document

1995-09-26

1997-10-14

Vu, Kim

Facsimile and static presentation processing

Facsimile

Picture signal generator

358463, 358464, 355 25, 399187, 399362, H04N 138, H04N 104, G03B 2732

Patent

active

056777760

ABSTRACT:
An image reader reads images from above a document platen upon which is placed a document such as a book or the like while using fingers or hands to press both edges of said document so as to prevent the pages of the document from rising upwardly, wherein the image reader determines the position of blank area in accordance with a background luminance, a character frequency of picture element, and position in subscan direction, and erases image data of blank area and its outside image data to erase image data of fingers or hands.

REFERENCES:
patent: 5084611 (1992-01-01), Okisu et al.
patent: 5377019 (1994-12-01), Okisu et al.

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