Third International conference on advances in communication, network and computing

Research Article

Contourlet Based Image Watermarking Scheme Using Schur Factorization and SVD

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  • @INPROCEEDINGS{10.1007/978-3-642-35615-5_53,
        author={Reena Gunjan and Priyanka Mitra and Manoj Gaur},
        title={Contourlet Based Image Watermarking Scheme Using Schur Factorization and SVD},
        proceedings={Third International conference on advances in communication, network and computing},
        proceedings_a={CNC},
        year={2012},
        month={12},
        keywords={Digital watermarking Contourlet Transform Schur factorization SVD factorization},
        doi={10.1007/978-3-642-35615-5_53}
    }
    
  • Reena Gunjan
    Priyanka Mitra
    Manoj Gaur
    Year: 2012
    Contourlet Based Image Watermarking Scheme Using Schur Factorization and SVD
    CNC
    Springer
    DOI: 10.1007/978-3-642-35615-5_53
Reena Gunjan1,*, Priyanka Mitra1,*, Manoj Gaur1,*
  • 1: Malaviya National Institute of Technology
*Contact email: reenagunjan@gmail.com, mitra.priyanka11@gmail.com, gaurms@gmail.com

Abstract

In this paper, a novel image watermarking scheme is proposed, based on Contourlet Transform (CT) and Matrix Factorization methods namely, Schur Factorization and Singular Value Decomposition (SVD). The original image and watermark are both decomposed by CT. The lowest frequency coefficients of original image after CT are factorized using SVD and that of watermark after CT are decomposed by Schur Factorization. The schur form of watermark is further factorized using SVD. The modified coefficients of singular values of watermark are embedded in the singular values of original image followed by inverse SVD and inverse CT computation that results in the watermarked image. The experimental results demonstrate that the scheme is resistant against signal processing attacks such as median filter, salt and pepper noise, Gaussian noise, compression and geometric attacks.