Unified Approach to Secure and Robust Digital Watermarking Scheme for Image Communication
Keta Raval1, Rajni Bhoomarker2

1Keta Raval, Department of Electronics and Communication, Patel Institute of Engineering and Science, RGPV, Bhopal (M.P.), India.
2Rajni Bhoomarker, Department of Electronics and Communication Patel College of Science and Technology, RGPV, Bhopal (M.P.), India.

Manuscript received on 21 March 2013 | Revised Manuscript received on 28 March 2013 | Manuscript published on 30 March 2013 | PP: 8-12 | Volume-2 Issue-1, March 2013 | Retrieval Number: A0456032113/2013©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 has become essential and prime need for multimedia industry, internet users and digital data authentication fields. With rapid growth of digital data, we have problems related to security and copyright authentication .These increased use of digital data creates new challenges for document owners and their reliable customers. Digital Watermarking has provided global and cost effective solution for digital image communication. In this paper a robust digital watermarking algorithm based on Joint DWT-DCT Transformation is proposed. A secrete message is scrambled and embedded in DWT-DCT coefficients of host image. Uncompressed digital watermark images need a lot storage capacity and bandwidth. For efficient image transmission needs image compression. Then watermarked data is used for desired application by channel communication.
Keywords: Digital Watermarking, Discrete Cosine Transform, Discrete Wavelet Transform

Scope of the Article: Image Processing and Pattern Recognition