Watermarking images with wavepackets encoded by intensity...

Details Watermarking images with wavepackets encoded by intensity... Watermarking images with wavepackets encoded by intensity...

2004-08-30

2009-06-23

Bali, Vikkram (Department: 2624)

Image analysis

Applications

Reexamination Certificate

active

07551751

ABSTRACT:
A phase space encoded watermark is applied to an image to guard against counterfeiting and/or unauthorized copying. The watermark is formed of wavepackets. An authentication message is encoded in the wavepackets by variations in one or both of the intensities of the wavepackets and the phases of the wavepackets.

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Proceedings of the IEEE vol. 87, No. 7, Jul. 1999 Digital Watermarking for Telltale Tamper Proofing and Authentification XP-000914459.

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