Multipurpose Digital Watermarking Algorithm Based on Dual-Tree CWT

Authors:
Lin Zhuang;Mingyan Jiang
Affiliations:
Shandong University, China;Shandong University, China
Venue:
ISDA '06 Proceedings of the Sixth International Conference on Intelligent Systems Design and Applications - Volume 02
Year:
2006

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Abstract

A multipurpose digital watermarking algorithm based on dual-tree Complex Wavelet Transform (CWT) is proposed for two purposes: to notify the copyright owner with a visible watermark, and to protect the copyright with an invisible watermark. These two watermarks are embedded in different blocks with different methods. Experimental results show that the dual-tree CWT has relatively high capacity to make the visible watermark hard to remove and the invisible watermark robust.