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DOI: 10.14569/IJACSA.2013.040615
PDF

Image and Video based double watermark extraction spread spectrum watermarking in low variance region

Author 1: Mriganka Gogoi
Author 2: Koushik Mahanta
Author 3: H.M.Khalid Raihan Bhuyan
Author 4: Dibya Jyoti Das
Author 5: Ankita Dutta

International Journal of Advanced Computer Science and Applications(IJACSA), Volume 4 Issue 6, 2013.

  • Abstract and Keywords
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Abstract: Digital watermarking plays a very important role in copyright protection. It is one of the techniques which are used for safeguarding the origins of the image, audio and video by protecting it against Piracy. This paper proposes a low variance based spread spectrum watermarking for image and video in which the watermark is obtained twice in the receiver. The watermark to be added is a binary image of comparatively smaller size than the Cover Image. Cover Image is divided into number of 8x8 blocks and transform into frequency domain using Discrete Cosine Transform. A gold sequence is added as well as subtracted in each block for each watermark bit. In most cases, researchers has generally used algorithms for extracting single watermark and also it is seen that finding the location of the distorted bit of the watermark due to some attacks is one of the most challenging task. However, in this paper the same watermark is embedded as well as extracted twice with gold code without much distortion of the image and comparing these two watermarks will help in finding the distorted bit. Another feature is that as this algorithm is based on embedding of watermark in low variance region, therefore proper extraction of the watermark is obtained at a lesser modulating factor. The proposed algorithm is very much useful in applications like real-time broad casting, image and video authentication and secure camera system. The experimental results show that the watermarking technique is robust against various attacks.

Keywords: Watermark;Gold Code; Variance; Correlation.

Mriganka Gogoi, Koushik Mahanta, H.M.Khalid Raihan Bhuyan, Dibya Jyoti Das and Ankita Dutta, “Image and Video based double watermark extraction spread spectrum watermarking in low variance region” International Journal of Advanced Computer Science and Applications(IJACSA), 4(6), 2013. http://dx.doi.org/10.14569/IJACSA.2013.040615

@article{Gogoi2013,
title = {Image and Video based double watermark extraction spread spectrum watermarking in low variance region},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2013.040615},
url = {http://dx.doi.org/10.14569/IJACSA.2013.040615},
year = {2013},
publisher = {The Science and Information Organization},
volume = {4},
number = {6},
author = {Mriganka Gogoi and Koushik Mahanta and H.M.Khalid Raihan Bhuyan and Dibya Jyoti Das and Ankita Dutta}
}



Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

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