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An Improved Imperceptibility and Robustness of 4x4 DCT-SVD Image Watermarking Using Modified Entropy

Ernawan, Ferda and Ramalingam, Mritha and Sadiq, Ali Safa and Zuriani, Mustaffa (2017) An Improved Imperceptibility and Robustness of 4x4 DCT-SVD Image Watermarking Using Modified Entropy. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 9 (2-7). pp. 111-116. ISSN 2180-1843

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A digital protection against unauthorized distribution of digital multimedia is highly on demand. Digital watermarking is a defence in multimedia protection for authorized ownership. This paper proposes an improved watermarking based on 4×4 DCT-SVD blocks using modified entropy in image watermarking. A modified entropy is used to select unnoticeable blocks. The proposed watermarking scheme utilizes the lowest entropy values to determine unnoticeable regions of the watermarked image. This paper investigates the relationship between U(2,1) and U(3,1) coefficients of the U matrix 4×4 DCT-SVD in image watermarking. The proposed watermarking scheme produces a great level of robustness and imperceptibility of the watermarked image against different attacks. The proposed scheme shows the improvement in terms of structural similarity index and normalized correlation of the watermarked image.

Item Type: Article
Uncontrolled Keywords: image watermarking, Modified Entropy; Discrete Cosine Transform; Imperceptibility; Watermark Embedding; Robustness
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Faculty/Division: Faculty of Computer System And Software Engineering
Depositing User: Dr. Ferda Ernawan
Date Deposited: 31 Oct 2017 00:48
Last Modified: 30 Mar 2018 08:24
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