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Reseach Article

Block based Digital Watermarking of Gray Images in the Singular Domain

Published on March 2012 by Rashmi Agarwal
Communication Security
Foundation of Computer Science USA
COMNETCS - Number 1
March 2012
Authors: Rashmi Agarwal
5ef2660c-48eb-4901-a1d6-ba86cb422ee9

Rashmi Agarwal . Block based Digital Watermarking of Gray Images in the Singular Domain. Communication Security. COMNETCS, 1 (March 2012), 56-59.

@article{
author = { Rashmi Agarwal },
title = { Block based Digital Watermarking of Gray Images in the Singular Domain },
journal = { Communication Security },
issue_date = { March 2012 },
volume = { COMNETCS },
number = { 1 },
month = { March },
year = { 2012 },
issn = 0975-8887,
pages = { 56-59 },
numpages = 4,
url = { /specialissues/comnetcs/number1/5483-1011/ },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Special Issue Article
%1 Communication Security
%A Rashmi Agarwal
%T Block based Digital Watermarking of Gray Images in the Singular Domain
%J Communication Security
%@ 0975-8887
%V COMNETCS
%N 1
%P 56-59
%D 2012
%I International Journal of Computer Applications
Abstract

To secure digital images transmitted through communication networks, we have used a block based digital image watermarking scheme based on singular value decomposition (SVD). Traditional SVD watermarking already exists for embedding watermark on the image as a whole. In the proposed approach, the original image is divided into blocks, and then the watermarks are embedded in the singular vector domain of each block separately instead of using singular values. This segmentation and watermarking process makes the algorithm more secure as we can embed many watermarks using blocked based approach. Watermark detection is implemented by extracting the watermark from the watermarked blocks. The proposed method is encouraging as far as imperceptibility and robustness are concerned.

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Index Terms

Computer Science
Information Sciences

Keywords

Digital communication Block based watermarking Gray Images Singular Value Decomposition