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2013 (Vol. 5, Issue: 05)
Article Information:

Research on a New Rotated-Resistant Transform Domain Digital Watermarking Algorithm

Guangxian Xu and Xin Zhang
Corresponding Author:  Guangxian Xu 

Key words:  DFT, digital watermarking, image rotation, LPT, transform domain , ,
Vol. 5 , (05): 1731-1735
Submitted Accepted Published
July 27, 2012 September 03, 2012 February 11, 2013

For the shortcoming that transform domain watermarking cannot resist image rotation attack, this study draws LPT (Log-Polar-Transform) theory into watermarking field, then puts forward a new improved algorithm based on LPT and DFT. Before embedding watermarking, first do LPT and DFT of the carrier image, because LPT and DFT theories respectively have good scale invariability and synchronicity when image rotation happens, they can provide an environment with an ability of resisting rotation; then spread the watermarking information spectrum with a pseudorandom sequence. In the end, embed the sequence into the low frequency band of the carrier to complete the embedding part. In process of detecting, rotate different angles of the carrier and extract the watermarking, calculate the correlation value between extracted watermarking image and carrier image. The experimental result proved that the algorithm could manifest a good robustness when it was attacked by image rotation and some other image attacking methods.
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  Cite this Reference:
Guangxian Xu and Xin Zhang, 2013. Research on a New Rotated-Resistant Transform Domain Digital Watermarking Algorithm.  Research Journal of Applied Sciences, Engineering and Technology, 5(05): 1731-1735.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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