Hybrid digital watermarking for video authentication

Details Hybrid digital watermarking for video authentication Hybrid digital watermarking for video authentication

2003-11-19

2008-08-05

Truong, Thanhnga B (Department: 2135)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S177000, C713S180000, C713S160000, C713S168000, C382S100000, C380S046000

Reexamination Certificate

active

07409556

ABSTRACT:
A hybrid digital watermarking system for video authentication includes an authenticated acquisition subsystem for digitally watermarking video data and a video management subsystem in signal communication with the authenticated acquisition subsystem for verifying the digitally watermarked video data, where the authenticated acquisition subsystem may include a watermarking device for applying each of an identity signature and a control signature to the video data within a hybrid digital watermark, and the hybrid digital watermark may achieve progressively varying robustness by means of error-correcting signature coding and/or rate-distortion guided bit embedding.

REFERENCES:
patent: 7007166 (2006-02-01), Moskowitz et al.
patent: 7142691 (2006-11-01), Levy

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