A RDWT and Block-SVD based Dual Watermarking Scheme for Digital Images

Gaur, Sachin; Srivastava, Vinay Kumar

doi:10.14569/ijacsa.2017.080430

Cited by 8 publications

(8 citation statements)

References 18 publications

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“…It is found that NC 1 and NC 2 of proposed scheme are much higher than the values obtained in [30] for same set of attacks. Table 6 emphasizes the efficacy of proposed algorithm by comparing it with other reported techniques such as [19] a , [19] b , [21] and [22] where [19] a signifies technique without BPNN and [19] b denotes technique using BPNN. Symbol '*' means NC values were not reported for these attacks.…”

Section: Simulation Results and Its Analysismentioning

confidence: 99%

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A Novel Dual Image Watermarking Technique Using Homomorphic Transform and DWT

Khare

Srivastava

2020

Journal of Intelligent Systems

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In this paper a new technique of dual image watermarking is proposed for protection of ownership rights which utilizes salient properties of homomorphic transform (HT), discrete wavelet transform (DWT), singular value decomposition (SVD) and Arnold transform (AT). In embedding algorithm host image is splitted into reflectance and illumination components using HT, DWT is further applied to the reflectance component resulting in frequency subbands (HL and LH) which are transformed by SVD. Two image watermarks are selected for embedding process whereas security of proposed algorithm is strengthen by performing scrambling of second watermark through AT. Both watermarks are transformed with DWT and SVD. Singular values (SVs) of both transformed watermark are embedded into SVs of host image. Simulation results clearly signifies for high robustness and imperceptibility of proposed algorithm as it is examined under various attacks. Superiority of proposed technique is illustrated by comparing it with other reported methods.

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Section: Simulation Results and Its Analysismentioning

confidence: 99%

“…However, this method does not yield sufficient value of correlation coefficient. Another similar method is investigated in [22]. Major difference lying in both schemes is use of image transforms.…”

Section: Introductionmentioning

confidence: 99%

A Novel Dual Image Watermarking Technique Using Homomorphic Transform and DWT

Khare

Srivastava

2020

Journal of Intelligent Systems

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“…In RDWT the size of the sub band at the same decomposition level is the same as the host image but decreased in DWT. RDWT analysis and synthesis equations can be expressed as the following equations [7,10]: where * means convolution, ↑2 means up sampling and ↓2 means down sampling at each iteration in DWT. Down sampling decreased the size of each sub band and increased the decomposition level.…”

Section: Redundant Discrete Wavelet Transformmentioning

confidence: 99%

“…This is due to the fact that bigger singular values do not only ensure the most energy of an image, but also withstand attacks. For that reason, the matrix S has been used as a choice for embedding a robust watermark [7].…”

Section: Singular Value Decompositionmentioning

confidence: 99%

A Hybrid Watermarking Scheme for Increasing Watermark Capacity and Security

El-Sheikh¹,

Khalifa²,

Mohammed³

2020

IJCA

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Imperceptible and robust watermarking schemes have been vastly used recently as powerful tools to guard the copyright protection, rightful ownership, and content authentication. This paper introduces a secure hybrid digital image watermarking algorithm based on bi-dimensional empirical mode decomposition (BEMD); redundant discrete wavelet transform (RDWT); discrete cosine transform (DCT) and singular value decomposition (SVD). A watermark is scrambled by Arnold transform to boost up its secrecy and robustness. The main purpose of this scheme is to increase the embedding watermark capacity and encryption while keeping it robust against different types of attacks. The number of changing pixel rate (NPCR) and the unified averaged changed intensity (UACI) are two most common quantities used to estimate the strength of watermark image encryption algorithms/ciphers with reference to differential attacks. A high NPCR/UACI score is usually explicated as a high resistance to differential attacks, as well as higher PSNR evaluation metrics. Experimental using PSNR, WDR, MSE, NC and BCR metrics on different host images (Lena, Barbara, and Boat) and the cameraman as the watermark image show that the presented scheme is rich in terms of imperceptibility, capacity, security and robustness. This has been also highlighted by comparing its performance against other stateof-the-art schemes.

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“…This process allows dual watermarks to be embedded many times in the host image which increases the robustness against several attacks. A dual watermarking approach using Redundant Discrete Wavelet Transform (RDWT), block based singular value decomposition (SVD) and Arnold transforms [2] is presented. This scheme has the high embedding capacity and a little degradation in the image.…”

Section: Related Workmentioning

confidence: 99%

Multipurpose Watermarking Based on SWT and SVD

Sivananthamaitrey¹,

Kumar²

2018

IJET

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Dual digital watermarking has emerged as a successful solution for copyright protection, tamper detection and localization. However, several problems related to the robustness, capacity, tampered area detection still mystifying. This paper presents a high capacity dual watermarking mechanism for digital color image. An invisible robust watermark is embedded in the Green component of the host image by using a hybrid combination of Stationary Wavelet Transform (SWT) and Singular Value Decomposition (SVD) for copyright protection. A fragile invisible watermark based on the Least Significant Bit (LSB) replacement approach is embedded in the Blue component of the image for tamper detection and localization. The proposed technique focuses on robustness and imperceptibility while maximizing embedding capacity that makes this technique a multipurpose watermarking scheme.

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A RDWT and Block-SVD based Dual Watermarking Scheme for Digital Images

Cited by 8 publications

References 18 publications

A Novel Dual Image Watermarking Technique Using Homomorphic Transform and DWT

A Novel Dual Image Watermarking Technique Using Homomorphic Transform and DWT

A Hybrid Watermarking Scheme for Increasing Watermark Capacity and Security

Multipurpose Watermarking Based on SWT and SVD

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