Increasing integrity of watermarks using robust features

Details Increasing integrity of watermarks using robust features Increasing integrity of watermarks using robust features

2002-12-09

2011-11-01

Zand, Kambiz (Department: 2434)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C382S100000

Reexamination Certificate

active

08051290

ABSTRACT:
This invention relates to a method and an arrangement for embedding a watermark pattern in an information signal. A method of embedding a watermark pattern in an information signal comprising the steps of determining a robust signature as a set of robust features in said information signal, creating a watermark pattern as a signature dependent function of a predefined basic watermark pattern and embedding said watermark pattern in said information signal. The invention also relates to a corresponding method and arrangement for detecting a watermark pattern in an information signal.

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Paulo S.L.M. Barreto et al, “Pitfalls in Public Key Watermarking”, Brazilian Symposium on Computer Graphics and Image Processing, XX, XX, Oct. 1999, pp. 241-242.

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