METHOD AND APPARATUS FOR DETECTING A WATERMARK IN AN INFORMATION SIGNAL

Disclosed is a method for the detection of pseudo-symmetric watermarks in an information signal. The method includes receiving the information signal, wherein the watermark is embedded in respective sections of the information signal by tiling a finite number of a plurality of watermark patterns, ac...

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Bibliographic Details
Main Author KALKER, ANTONIUS, A., C., M
Format Patent
LanguageEnglish
French
German
Published 07.12.2005
Edition7
Subjects
ADVERTISING
CALCULATING
CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY
COMPUTING
COUNTING
CRYPTOGRAPHY
DISPLAY
EDUCATION
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
SEALS
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Summary:Disclosed is a method for the detection of pseudo-symmetric watermarks in an information signal. The method includes receiving the information signal, wherein the watermark is embedded in respective sections of the information signal by tiling a finite number of a plurality of watermark patterns, accumulating the sections, and correlating the accumulated sections with a sum of the plurality of watermark patterns. In particular, the information signal is folded as if there was only a single basic pattern. The presence of the watermark is then detected by a cyclic sliding correlating.
Bibliography:Application Number: EP20020710255