Immediate verification of printed copy

Details Immediate verification of printed copy Immediate verification of printed copy

2011-01-04

2011-01-04

Coles, Edward L (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Data corruption, power interruption, or print prevention

C382S100000, C382S103000, C382S300000

Reexamination Certificate

active

07864349

ABSTRACT:
Print verification is done by scanning the printed copies, thereby forming a stream of scanned images of the specific pages. Digitized images from the stream are then spatially aligned page by page, line by line and pixel (pel) by pixel (pel) with corresponding digitized images in a stream of source images. The source and scanned images are compared to find pel sequences that are different. These differences represent defects in the printed copies.

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patent: 6810156 (2004-10-01), Itoh
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patent: 6993156 (2006-01-01), Szeliski et al.
patent: 7013803 (2006-03-01), Hansen et al.
patent: 2002/0084648 (2002-07-01), Pierce et al.
Journal of Electronic Imaging, Gordon W. Braudaway, Oct. 2000, vol. 9(4) p. 477-483.
IS&T's 1999 PICS Conference, Apr. 25-28, 1999, Savannah, Georgia, p. 307-310.

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