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Robust copyright-protection scheme based on visual secret sharing and Bose–Chaudhuri–Hocquenghem code techniques

[+] Author Affiliations
Tzuo-Yau Fan

National Taiwan University of Science and Technology, Department of Electronic Engineering, Taipei, Taiwan

Bin-Chang Chieu

National Taiwan University of Science and Technology, Department of Electronic Engineering, Taipei, Taiwan

Her-Chang Chao

Ming Chuan University, Department of Computer Science and Information Engineering, Taoyuan, Taiwan

J. Electron. Imaging. 21(4), 043018 (Dec 03, 2012). doi:10.1117/1.JEI.21.4.043018
History: Received February 10, 2012; Revised September 7, 2012; Accepted November 7, 2012
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Abstract.  A robust copyright scheme for image protection based on visual secret sharing (VSS) and Bose–Chaudhuri–Hocquenghem (BCH) code techniques is proposed. This scheme not only maintains the quality of a host image without the change of any pixel value but also generates a meaningful ownership share to improve the management of image copyright. In addition, no codebook is required to store, and the watermark size is independent of the host image. The robustness of watermarking can be enhanced by BCH code. The proposed scheme contains ownership share construction and watermark extraction. In the first phase, an encoded watermark is generated by BCH code from a watermark. Next, an image feature is then extracted by the discrete wavelet transform decomposing from the host image. Finally, an ownership share can be generated by VSS technique from the image feature and the encoded watermark. In the second phase, a master share can be produced from a suspect image. By stacking the master and the ownership shares and using BCH code, an extracted watermark can be obtained. The experimental results show that the proposed scheme using the BCH(15,5) has better robust performance and practicability than existing schemes.

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© 2012 SPIE and IS&T

Citation

Tzuo-Yau Fan ; Bin-Chang Chieu and Her-Chang Chao
"Robust copyright-protection scheme based on visual secret sharing and Bose–Chaudhuri–Hocquenghem code techniques", J. Electron. Imaging. 21(4), 043018 (Dec 03, 2012). ; http://dx.doi.org/10.1117/1.JEI.21.4.043018


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