Method of authenication for steganographic signals...

Details Method of authenication for steganographic signals... Method of authenication for steganographic signals...

2006-10-31

2006-10-31

Ahmed, Samir (Department: 2624)

Image analysis

Applications

Reexamination Certificate

active

07130444

ABSTRACT:
A method for authenticating a printed or scanned embedded image is disclosed that utilizes a prediction of the effect of a print or scanning process on the embedded message based upon characteristics of the printer or scanner. These values are measured directly at the time of authentication and compared to the predicted. Based on the comparison a decision is made regarding authenticity.

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“Benchmarking of the ISO 12233 Slanted-edge Spatial Frequency Response Plug-in”, by Don Williams, Imaging Research and Advanced Development, Eastman Kodak Company, Rochester, New York, 1465-1925, IS&T's 1998 PICS Conference, pp. 133-136.

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