Show-through correction for two-sided documents

Details Show-through correction for two-sided documents Show-through correction for two-sided documents

1996-01-11

1997-07-08

Rogers, Scott A.

Facsimile and static presentation processing

Facsimile

Image reproduction system

358448, 358464, H04N 123, H04N 138, H04N 1387

Patent

active

056467443

ABSTRACT:
An image processing method for mitigating the effects of show-through in scanning a duplexed document in a duplex scanning system, including: deriving a scanned first side image P from a first side image A of a duplexed document and a scanned second side image Q from a second side image B of the duplexed document, at least the first side image P including a component thereof attributable to show-through from the second side of the document, and storing images P and Q; from second side image Q, generating a representation thereof corresponding to the show-through contribution to first side image P; processing image P to remove show-through as a function of the representation Q, thereby deriving correct image A.

REFERENCES:
patent: 4604161 (1986-08-01), Araghi
patent: 4673285 (1987-06-01), Shogren
patent: 4734742 (1988-03-01), Klumpp et al.
patent: 4743974 (1988-05-01), Lockwood
patent: 4967233 (1990-10-01), Buchar et al.
patent: 5053818 (1991-10-01), Smith

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