A Novel Watermarking Scheme in Contourlet Domain Based on Schur Factorization

Liu, Peng; Wei, Juan; Chen, Feng

doi:10.1109/iciecs.2010.5677754

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…Recently, several Schur-based image watermarking methods for copyright protection have been proposed [13][14][15][16][17][18]. Depending on the Schur features selected to store the watermark, these methods can be divided into two categories:…”

Section: Schur-based Watermarkingmentioning

confidence: 99%

“…• Eigenvalue-based, which insert the watermark into the diagonal elements of the matrix S using an additively (multiplicatively) rule or quantization-based [14][15][16][17][18].…”

Section: Schur-based Watermarkingmentioning

confidence: 99%

“…The Schur decomposition [13][14][15][16][17][18] is another domain that has been recently used for robust watermarking. These schemes show good performances in terms of robustness, capacity and imperceptibility.…”

Section: Introductionmentioning

confidence: 99%

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On the security of the schur-based watermarking schemes

Pomponiu

Cavagnino

Botta

2015

2015 IEEE International Conference on Digital Signal Processing (DSP)

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Abstract-This paper presents a security analysis of robust watermarking methods based on Schur decomposition in a general scenario. The security is defined as the difficulty to remove the watermark and to estimate the secrets used in the embedding process, supposing that the adversary possesses several watermarked digital contents. The theoretical analysis and extensive experimental results carried out prove that these schemes fail to secure the digital contents against malicious attacks.

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Section: Schur-based Watermarkingmentioning

confidence: 99%

“…• Eigenvalue-based, which insert the watermark into the diagonal elements of the matrix S using an additively (multiplicatively) rule or quantization-based [14][15][16][17][18].…”

Section: Schur-based Watermarkingmentioning

confidence: 99%

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On the security of the schur-based watermarking schemes

Pomponiu

Cavagnino

Botta

2015

2015 IEEE International Conference on Digital Signal Processing (DSP)

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“…Recently in Ref. [9] schur transform is used along with CT and SVD. The LL band of original image after CT is factorized using SVD and that of watermark after CT are decomposed by Schur Factorization.…”

Section: Introductionmentioning

confidence: 99%

A Fast and Robust Hybrid Watermarking Scheme Based on Schur and SVD Transform

Meenakshi¹

2014

IJRET

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This paper presents a robust watermarking for still digital images based on schur factorization and Singular Value Decomposition (SVD). In this paper, image is decomposed into 88  blocks and after applying schur factorization, the stable largest eigen values of the upper triangle is used as robust locations for embedding watermark. The matrix array formed by largest eigen values further factorized by Singular Value Decomposition and singular values of these coefficients are modified with the singular values of watermark. Later inverse SVD and inverse schur is applied to get watermarked image. The watermark is subjected to checkmark watermarking evaluation software and it is found that the method is robust against number of attacks and highly imperceptible.

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