Robust Watermarking Method for Color Images using DCT Coefficients of Watermark

Article ID

CSTGV22H47

Robust Watermarking Method for Color Images using DCT Coefficients of Watermark

Dr. R. Eswaraiah
Dr. R. Eswaraiah Vasireddy Venkatadri Institute of Technology
E.Sreenivasa Reddy
E.Sreenivasa Reddy
DOI

Abstract

Digital technologies are playing a vital role in the present communication system. This paper presents a robust and secure watermarking method to protect the copyright information of multimedia objects. In the proposed method, Discrete Wavelet Transform and Discrete Cosine Transform are applied on the cover image and then Discrete Cosine Transform coefficients of watermark image are embedded into transformed cover image. The experimental result shows the performance evaluation of the proposed method by the quality metrics as PSNR for watermarked image and NC for extracted watermark image and we have compared the results with the existing transformation methods in frequency domain based on attacks.

Robust Watermarking Method for Color Images using DCT Coefficients of Watermark

Digital technologies are playing a vital role in the present communication system. This paper presents a robust and secure watermarking method to protect the copyright information of multimedia objects. In the proposed method, Discrete Wavelet Transform and Discrete Cosine Transform are applied on the cover image and then Discrete Cosine Transform coefficients of watermark image are embedded into transformed cover image. The experimental result shows the performance evaluation of the proposed method by the quality metrics as PSNR for watermarked image and NC for extracted watermark image and we have compared the results with the existing transformation methods in frequency domain based on attacks.

Dr. R. Eswaraiah
Dr. R. Eswaraiah Vasireddy Venkatadri Institute of Technology
E.Sreenivasa Reddy
E.Sreenivasa Reddy

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Dr. R. Eswaraiah. 2012. “. Global Journal of Computer Science and Technology – F: Graphics & Vision GJCST-F Volume 12 (GJCST Volume 12 Issue F12): .

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Crossref Journal DOI 10.17406/gjcst

Print ISSN 0975-4350

e-ISSN 0975-4172

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GJCST Volume 12 Issue F12
Pg. 31- 34
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Robust Watermarking Method for Color Images using DCT Coefficients of Watermark

Dr. R. Eswaraiah
Dr. R. Eswaraiah Vasireddy Venkatadri Institute of Technology
E.Sreenivasa Reddy
E.Sreenivasa Reddy

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