Method and device for watermark

本发明公开了一种用于检测在一个信息(例如图象或视频)信号中的水印的改进方法和装置。通过在检测在所怀疑的图象(q)和将被检测的水印(Wi)之间的相关性数值之前将所述信号经过对称仅相位匹配滤波(24-28，30)而使得检测更可靠和较不脆弱。 A method is disclosed for embedding auxiliary data in a signal. The data is encoded into the relative position or phase of one or more basic watermark patterns. This allows multi-bi...

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Bibliographische Detailangaben
Hauptverfasser:	J.A. HAISTAMA, A.J.M. DENISSEN, A.A.C.M. KALKER
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING BROADCAST COMMUNICATION CALCULATING CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY COMPUTING COUNTING CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY HANDLING RECORD CARRIERS IMAGE DATA PROCESSING OR GENERATION, IN GENERAL PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS SEALS
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Beschreibung
Zusammenfassung:	本发明公开了一种用于检测在一个信息(例如图象或视频)信号中的水印的改进方法和装置。通过在检测在所怀疑的图象(q)和将被检测的水印(Wi)之间的相关性数值之前将所述信号经过对称仅相位匹配滤波(24-28，30)而使得检测更可靠和较不脆弱。 A method is disclosed for embedding auxiliary data in a signal. The data is encoded into the relative position or phase of one or more basic watermark patterns. This allows multi-bit data to be embedded by using only one or a few distinct watermark patterns.