Digital Color Image Watermarking using DWT-DCT Coefficients in RGB Planes

1
Prof E.Sreenivasa Reddy
Prof E.Sreenivasa Reddy
2
K.Chaitanya
K.Chaitanya
3
E. Sreenivasa Reddy
E. Sreenivasa Reddy
4
K.Gangadhara Rao
K.Gangadhara Rao
1 Acharya Nagarjuna University,Guntur, AP, India.

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GJCST Volume 13 Issue F5

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Digital image watermarking is used to identify the authenticity and integrity and to show the identity of its owners. This paper presents a more secure method for copy right protection. In the proposed method, the color image is decomposed into 3 color channels Red, Green and Blue and then DWT and DCT are applied to B channel of the R, G and B channels. The colored Watermark image is decomposed into R, G, B channels and DCT is applied to all the channels separately. R, G, B channels of watermark image are embedded into mid frequency coefficients of B channel already selected. The performance of proposed algorithm is measured by using Mean Square Error, Peak Signal to Noise Ratio, Standardized Correlation and Normalized Correlation. A comparative study of proposed scheme with the existing methods which uses DWT-DCT transforms is carried here and results shown.

26 Cites in Articles

References

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

Prof E.Sreenivasa Reddy. 2013. \u201cDigital Color Image Watermarking using DWT-DCT Coefficients in RGB Planes\u201d. Global Journal of Computer Science and Technology - F: Graphics & Vision GJCST-F Volume 13 (GJCST Volume 13 Issue F5): .

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GJCST Volume 13 Issue F5
Pg. 17- 21
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Crossref Journal DOI 10.17406/gjcst

Print ISSN 0975-4350

e-ISSN 0975-4172

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v1.2

Issue date

June 29, 2013

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English

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Digital image watermarking is used to identify the authenticity and integrity and to show the identity of its owners. This paper presents a more secure method for copy right protection. In the proposed method, the color image is decomposed into 3 color channels Red, Green and Blue and then DWT and DCT are applied to B channel of the R, G and B channels. The colored Watermark image is decomposed into R, G, B channels and DCT is applied to all the channels separately. R, G, B channels of watermark image are embedded into mid frequency coefficients of B channel already selected. The performance of proposed algorithm is measured by using Mean Square Error, Peak Signal to Noise Ratio, Standardized Correlation and Normalized Correlation. A comparative study of proposed scheme with the existing methods which uses DWT-DCT transforms is carried here and results shown.

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Digital Color Image Watermarking using DWT-DCT Coefficients in RGB Planes

K.Chaitanya
K.Chaitanya
E. Sreenivasa Reddy
E. Sreenivasa Reddy
K.Gangadhara Rao
K.Gangadhara Rao

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