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

2012 ◽  
Vol 21 (4) ◽  
pp. 043018 ◽  
Author(s):  
Tzuo-Yau Fan ◽  
Bin-Chang Chieu ◽  
Her-Chang Chao
Author(s):  
Minh Thanh Tạ

This paper proposes a new watermarking method for digital image by composing the DWT-QIM based embedding with visual secret sharing (VSS) method. Firstly, the watermark image is separated into $n$ shares by using the $k-out-of-n$ method, called $(k,n)$ visual secret sharing. One of share is employed in order to embed into the original image for copyright protection. Another $(n-1)$ of shares are registered with Vietnam Copyright Department. When the dispute happens, the verifier can extract the watermark information from the watermarked image, then, decode it with $(k-1)$ shares chosen from $(n-1)$ shares to achieve the copyright information. Our experimental results show that our proposed method works efficiently on the digital images.


2013 ◽  
Vol 62 (6) ◽  
pp. 342-352
Author(s):  
C-C. Lee ◽  
C-C. Lee ◽  
H-T. Liu ◽  
C-S. Tsai

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