US 6,983,084 B2
Method of aligning page images
Hui Chao, San Jose, Calif. (US); and Dan S. Bloomberg, Palo Alto, Calif. (US)
Assigned to Hewlett-Packard Development Company, LP., Houston, Tex. (US)
Filed on Aug. 28, 2002, as Appl. No. 10/231,415.
Application 10/231415 is a continuation in part of application No. 10/150362, filed on May 17, 2002.
Prior Publication US 2003/0215157 A1, Nov. 20, 2003
Int. Cl. G06K 9/32 (2006.01)
U.S. Cl. 382—294 29 Claims
OG exemplary drawing
 
15. A system for aligning a first page image and a second page image, comprising:
an alignment data generator for generating a plurality of first data sets based on said first page image, for generating a plurality of second data sets based on said second page image, and for deskewing said first and second page images;
a cross-correlator for cross-correlating one of said first data sets and one of said second data sets to generate cross-correlation data; and
data analyzer for determining a maximum of said cross-correlation data, wherein said maximum indicates alignment between said first and second page images.