Review to Digital Watermarking and a Novel Approach to Position the Watermark in the Digital Image
Prabhishek Singh1, R S Chadha2
1Prabhishek Singh, M.Tech (CSE), Department of CSE, C-DAC, Noida, India.
2R S Chadha, Assistant. Prof, MTech Head, CDAC, Noida, India.
Manuscript received on March 22, 2013. | Revised Manuscript received on April 13, 2013. | Manuscript published on April 30, 2013. | PP: 24-27 | Volume-2, Issue-4, April 2013. | Retrieval Number: D1258042413/2013©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: Digital watermarking technology is a frontier research field and it mainly focuses on the intellectual property rights, identification and authentication of the digital media to protect the important documents. According to the basic analysis of digital image watermarking the digital watermarking model consists of two modules, which are watermark embedding module and watermark extraction and detection module Since it is known that digital image transmitted and spread over the network so there is a chance of being polluted by the noise or it may be attacked by the malicious users. The watermark embedded in the digital image may be incorrectly detected due to shortage of algorithms, so to precisely position the watermark is the main issue. A review to Digital watermarking is being presented in the paper and a novel watermark positioning approach is proposed in this paper which uses the statistical characteristics of the pixels to embed the watermark into brightness values of the pixels using image segmentation on the Windows platform using Matlab programming language.
Keywords: Digital Watermarking, Image segmentation, Matlab functions, Otsu’s method thresholding, Patchwork algorithm.