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Proceedings Paper

Low-noise multiple watermarks technology based on complex double random phase encoding method
Author(s): Jihong Zheng; Rongwen Lu; Liujie Sun; Songlin Zhuang
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Paper Abstract

Based on double random phase encoding method (DRPE), watermarking technology may provide a stable and robust method to protect the copyright of the printing. However, due to its linear character, DRPE exist the serious safety risk when it is attacked. In this paper, a complex coding method, which means adding the chaotic encryption based on logistic mapping before the DRPE coding, is provided and simulated. The results testify the complex method will provide better security protection for the watermarking. Furthermore, a low-noise multiple watermarking is studied, which means embedding multiple watermarks into one host printing and decrypt them with corresponding phase keys individually. The Digital simulation and mathematic analysis show that with the same total embedding weight factor, multiply watermarking will improve signal noise ratio (SNR) of the output printing image significantly. The complex multiply watermark method may provide a robust, stability, reliability copyright protection with higher quality printing image.

Paper Details

Date Published: 2 December 2010
PDF: 10 pages
Proc. SPIE 7851, Information Optics and Optical Data Storage, 78511E (2 December 2010); doi: 10.1117/12.881230
Show Author Affiliations
Jihong Zheng, Univ. of Shanghai for Science and Technology (China)
Rongwen Lu, Univ. of Shanghai for Science and Technology (China)
Liujie Sun, Univ. of Shanghai for Science and Technology (China)
Songlin Zhuang, Univ. of Shanghai for Science and Technology (China)


Published in SPIE Proceedings Vol. 7851:
Information Optics and Optical Data Storage
Feijun Song; Shiquan Tao; Francis T. S. Yu; Suganda Jutamulia; Kees A. Schouhamer Immink; Keiji Shono, Editor(s)

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