Robust Blind Digital Image Watermarking Using DWT and Dual Encryption Technique

Kalra, G. S.; Talwar, Rajneesh; Sadawarti, Harsh

doi:10.1109/cicsyn.2011.56

Cited by 11 publications

(2 citation statements)

References 10 publications

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“…Ref. [5] developed a blind watermarking algorithm based on the discrete wavelet transform (DWT) and dual encryption techniques. The algorithm transforms a watermark into a random sequence using the Arnold transform as well as the Chaos transform.…”

Section: Literature Reviewmentioning

confidence: 99%

A Digital Image Watermarking Using Dwt and Lshaped Tromino Fractal Encryption

Awarayi¹,

Appiah²,

Weyori³

et al. 2021

IJIGSP

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This paper presents a digital image watermarking scheme in the frequency domain for colour images. The algorithm was developed using the digital wavelet transform together with fractal encryption. A host image was first transformed into a frequency domain using the discrete wavelet transform after which a binary watermark was permuted and encrypted with a fractal generated from the watermark and a random key. The encrypted watermark is then embedded into the host image in the frequency domain to form a watermarked image. The algorithm's performance was examined based on the image quality of the watermarked image using peak signal to noise ratio. A perceptual metrics called the structural similarity index metric was further used to examine the structural similarity of the watermarked image and the extracted watermark. Again, the normalised cross-correlation was introduced to further assess the robustness of the algorithm. Our algorithm produced a peak signal to noise ratio of 51.1382dB and a structural similarity index of 0.9999 when tested on colour images of Lena, baboon and pepper indicating the quality of the watermarked images produced and hence indicates a higher imperceptibility of the proposed algorithm. The extracted watermark also had a structural similarity of 1 and a normalised cross correlation of 1 indicating a perfect similarity between the original watermark and the extracted watermark hence shows a higher performance of the proposed algorithm. The algorithm also showed a very good level of robustness when various attacks such as Gaussian noise, Poisson noise, salt and pepper noise, speckle noise and filtering were applied.

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Section: Literature Reviewmentioning

confidence: 99%

A Digital Image Watermarking Using Dwt and Lshaped Tromino Fractal Encryption

Awarayi¹,

Appiah²,

Weyori³

et al. 2021

IJIGSP

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show abstract

“…In transform domain watermarking, prior to embedding the watermark, transformation such as discrete Fourier transform (DFT) [32][33][34][35][36], discrete-cosine transform (DCT) [37][38][39][40][41][42][43][44][45], discrete-wavelet transform (DWT) [9,22,[46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65], dual tree complex wavelet transform (DTCWT) [66][67][68], contourlet [69][70][71][72], or singular value decomposition (SVD) [44,47,49,52,[73][74][...…”

Section: Transform Domain Techniquesmentioning

confidence: 99%

Watermarking Techniques used in Medical Images: a Survey

2014

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The ever-growing numbers of medical digital images and the need to share them among specialists and hospitals for better and more accurate diagnosis require that patients' privacy be protected. As a result of this, there is a need for medical image watermarking (MIW). However, MIW needs to be performed with special care for two reasons. Firstly, the watermarking procedure cannot compromise the quality of the image. Secondly, confidential patient information embedded within the image should be flawlessly retrievable without risk of error after image decompressing. Despite extensive research undertaken in this area, there is still no method available to fulfill all the requirements of MIW. This paper aims to provide a useful survey on watermarking and offer a clear perspective for interested researchers by analyzing the strengths and weaknesses of different existing methods.

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A Novel Robust Watermarking Algorithm for Encrypted Medical Image Based on Bandelet-DCT

Fang

Liu²,

et al. 2021

Innovation in Medicine and Healthcare

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Robust Blind Digital Image Watermarking Using DWT and Dual Encryption Technique

Cited by 11 publications

References 10 publications

A Digital Image Watermarking Using Dwt and Lshaped Tromino Fractal Encryption

A Digital Image Watermarking Using Dwt and Lshaped Tromino Fractal Encryption

Watermarking Techniques used in Medical Images: a Survey

A Novel Robust Watermarking Algorithm for Encrypted Medical Image Based on Bandelet-DCT

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