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Journal of Electronic Imaging • Open Access

Robust copyright-protection scheme based on visual secret sharing and Bose-Chaudhuri-Hocquenghem code techniques
Author(s): Tzuo-Yau Fan; Bin-Chang Chieu; Her-Chang Chao

Paper 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.

Paper Details

Date Published: 3 December 2012
PDF: 9 pages
J. Electron. Imaging. 21(4) 043018 doi: 10.1117/1.JEI.21.4.043018
Published in: Journal of Electronic Imaging Volume 21, Issue 4
Show Author Affiliations
Tzuo-Yau Fan, National Taiwan Univ. of Science and Technology (Taiwan)
Bin-Chang Chieu, National Taiwan Univ. of Science and Technology (Taiwan)
Her-Chang Chao, Ming Chuan Univ. (Taiwan)


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