A Robust Image Watermarking Scheme Invariant to Rotation, Scaling and Translation Attack using DFT
Bhalchandra D. Dhokale1, Ramesh Y. Mali2
1Mr. Bhalchandra D. Dhokale,  Electronics and Telecommunication University of Pune, India.
2Mr. Ramesh Y. Mali,  Electronics and Telecommunication University of Pune, Maharashtra Institute of Technology College of Engineering, Pune, India.
Manuscript received on May 23, 2014. | Revised Manuscript received on June 10, 2014. | Manuscript published on June 30, 2014. | PP: 269-273  | Volume-3, Issue-5, June 2014.  | Retrieval Number:  E3240063514/2013©BEIESP

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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Rapid development of digital technology has improved the ease of access to digital information copied, processed, stored and distributed among unauthorized users using freely available software. It also leads to the consequence of making the illegal production and redistribution of digital media easy and undetectable. Hence, the risk of copyright violation of multimedia data has increased due to the enormous growth of computer networks So, digital watermarking technique provides solution to the problem. Watermarking is the process in which an informal data is incorporated in original data to protect the owner’s copyright over that content… Traditional watermarking schemes are sensitive to geometric distortions, in which synchronisation for recovering embedded information is a challenging task because of the disorder caused by rotation, scaling or translation (RST). The existing RST resistant watermarking methods still have limitations with respect to robustness, capacity and fidelity. Several types of watermarking algorithms have been developed so far each of which has its own advantage and limitations. Among these discrete Fourier transform (DFT) based watermarking algorithms have attracted researchers due to its simplicity and some attractive mathematical properties of DFT. Experimental results have been compared with existing algorithm which seems to be promising.
Keywords: Rotation, RST, DFT, Scale, Translation, Watermarking.