Robust gray-level watermark embedding and retrieving technique

The present invention relates to information security, and proposes a novel digital gray-level watermark system by applying the discrete cosine transform and digital quantization technique to embed the gray scale watermark into the digital image effectively, so as to achieve the purpose of protectin...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	HSIEH, CHUN-HUNG, JANG, JENNG, TSAI, CHUEI-SHIUNG, CHEN, TUNG-SHIAU, CHEN, MING-HUANG
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PICTORIAL COMMUNICATION, e.g. TELEVISION
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!