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Proceedings Paper

Digital watermarking based on self-similarity in DWT of image
Author(s): Hanqiang Cao; Guang-Xi Zhu; Yaoting Zhu; Zhengbing Zhang
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Paper Abstract

Digital watermarking has been recently proposed as the mean for property right protection of digital products. In this paper we analyze the self-similarities in detail signals of discrete wavelet transform of the image for the purpose of protecting the copyright of the image. The signature embedded using this method is retrievable only by the mean of protected information. Our studies have shown that the watermarked image has a good quality of image, and such a watermark is difficult to detect and unchangeable without the appropriate user crytogram.

Paper Details

Date Published: 26 September 2001
PDF: 6 pages
Proc. SPIE 4551, Image Compression and Encryption Technologies, (26 September 2001); doi: 10.1117/12.442898
Show Author Affiliations
Hanqiang Cao, Huazhong Univ. of Science and Technology (China)
Guang-Xi Zhu, Huazhong Univ. of Science and Technology (China)
Yaoting Zhu, Huazhong Univ. of Science and Technology (China)
Zhengbing Zhang, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 4551:
Image Compression and Encryption Technologies

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