Image analysis – Pattern recognition – Template matching
Reexamination Certificate
2011-06-21
2011-06-21
Mehta, Bhavesh M (Department: 2624)
Image analysis
Pattern recognition
Template matching
C382S181000, C382S219000
Reexamination Certificate
active
07965894
ABSTRACT:
A document alteration detection method compares a target image with an original image using a two-step process. In the first step, the original and target images are divided into connected image components and their centroids are obtained, and the centroids of the image components in the original and target images are compared. Each centroid in the target image that is not in the original image is deemed to represent an addition, and each centroid in the original image that is not in the target image is deemed to represent a deletion. In the second step, sub-images containing the image components corresponding to each pair of matching centroids in the original and target images are compared to detect any alterations.
REFERENCES:
patent: 6212504 (2001-04-01), Hayosh
patent: 6289108 (2001-09-01), Rhoads
patent: 6748102 (2004-06-01), Prakash
patent: 7043052 (2006-05-01), Rhoads
patent: 7080041 (2006-07-01), Nagel
patent: 7239734 (2007-07-01), Alattar et al.
patent: 7280696 (2007-10-01), Zakrzewski et al.
patent: 7330563 (2008-02-01), Rhoads
patent: 7394573 (2008-07-01), Goldberg et al.
patent: 7650047 (2010-01-01), Jin et al.
patent: 2003/0228058 (2003-12-01), Xie et al.
patent: 2006/0109515 (2006-05-01), Zhao et al.
patent: 2007/0081694 (2007-04-01), Ryan, Jr.
patent: 2008/0177799 (2008-07-01), Wilson
patent: 2008/0216149 (2008-09-01), Rhoads
patent: 2008/0310736 (2008-12-01), Chattopadhyay et al.
patent: 2009/0067666 (2009-03-01), Zhao et al.
Yu et al., “Image Authentication in Print-and-scan Scenario”, Intelligent Information Hiding and Multimedia Signal Processing, Third International Conference, Nov. 2007, pp. 295-298, vol. 1.
Liu et al., “Binary Image Authentication using Zernike Moments”, Image Processing, IEEE International Conference, Sep. 16, 2007-Oct. 19, 2007, pp. I-385-I-388.
Ming Wei
Tian Yibin
Chen Yoshimura LLP
Konica Minolta Systems Laboratory, Inc.
Koziol Stephen R
Mehta Bhavesh M
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