Method of effacing zipper image

Details Method of effacing zipper image Method of effacing zipper image

2006-03-14

2006-03-14

Coles, Edward (Department: 2622)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S400000, C382S155000, C382S275000

Reexamination Certificate

active

07012720

ABSTRACT:
A method of effacing zipper image, applicable to scan a document by a scanner with a stagger charge-coupled device. The nth (n is a positive integer) pixel obtained by scan on a scan line at which the zipper image is produced is subtracted by the (n+1)th pixel obtained by scan on the scan line. The absolute value of the result is then compared to a critical value. If the result is smaller than the critical value, the nth pixel is the nth pixel modified as the nth pixel after process.

REFERENCES:
U.S. Appl. No. 10/714,634 “Apparatus for Reducing Zipper of Image and Method Thereof”. Chang et al.

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