Watermarking with wavelets: Simplicity leads to robustness

Brannock, Evelyn; Weeks, Michael; Harrison, Robert W.

doi:10.1109/secon.2008.4494361

Cited by 15 publications

(14 citation statements)

References 9 publications

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“…6) Apply inverse DCT transform on each block. [9]. One of the main challenges of the watermarking problem is to achieve a better tradeoff between robustness and perceptivity.…”

Section: Discrete Cosine Transforms (Dct): Dct Like a Fouriermentioning

confidence: 99%

“…One of the main challenges of the watermarking problem is to achieve a better tradeoff between robustness and perceptivity. Robustness can be achieved by increasing the strength of the embedded watermark, but the visible distortion would be increased as well [9]. However, DWT is much preferred because it provides both a simultaneous spatial localization and a frequency spread of the watermark within the host image [10].…”

Section: Discrete Cosine Transforms (Dct): Dct Like a Fouriermentioning

confidence: 99%

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Digital Watermarking Applications and Techniques:A Brief Review

Rashid¹

2016

IJCATR

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Abstract:The frequent availability of digital data such as audio, images and videos became possible to the public through the expansion of the internet. Digital watermarking technology is being adopted to ensure and facilitate data authentication, security and copyright protection of digital media. It is considered as the most important technology in today's world, to prevent illegal copying of data. Digital watermarking can be applied to audio, video, text or images. This paper includes the detail study of watermarking definition and various watermarking applications and techniques used to enhance data security.

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“…6) Apply inverse DCT transform on each block. [9]. One of the main challenges of the watermarking problem is to achieve a better tradeoff between robustness and perceptivity.…”

Section: Discrete Cosine Transforms (Dct): Dct Like a Fouriermentioning

confidence: 99%

Section: Discrete Cosine Transforms (Dct): Dct Like a Fouriermentioning

confidence: 99%

Digital Watermarking Applications and Techniques:A Brief Review

Rashid¹

2016

IJCATR

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“…Besides sharing, the approaches using data hiding [17][18][19] or watermarking [20][21][22][23][24] have also offered other kinds of protection. In general, a hiding method can embed a secret file in a host image.…”

Section: Introductionmentioning

confidence: 99%

“…In the design of watermarking methods, the researchers usually pay more attention to the work of resisting attacks such as copy attack, tampering, and cropping. Nowadays, the study of watermarks has covered not only software [21,24] but also hardware [22,23]. Notably, a sharing method often has a post-processing which utilizes data hiding or some kinds of authentication tool.…”

Section: Introductionmentioning

confidence: 99%

Progressive sharing of multiple images with sensitivity-controlled decoding

Chang

Lee

Yeh

et al. 2015

EURASIP J. Adv. Signal Process.

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Secure sharing of digital images is becoming an important issue. Consequently, many schemes for ensuring image sharing security have been proposed. However, existing approaches focus on the sharing of a single image, rather than multiple images. We propose three kinds of sharing methods that progressively reveal n given secret images according to the sensitivity level of each image. Method 1 divides each secret image into n parts and then combines and hides the parts of the images to get n steganographic (stego) JPEG codes of equal importance. Method 2 is similar; however, it allocates different stego JPEG codes of different 'weights' to indicate their strength. Method 3 first applies traditional threshold-sharing to the n secret images, then progressively shares k keys, and finally combines the two sharing results to get n stego JPEG codes. In the recovery phase, various parameters are compared to a pre-specified low/middle/high (L/M/H) threshold and, according to the respective method, determine whether or not secret images are reconstructed and the quality of the images reconstructed. The results of experiments conducted verify the efficacy of our methods.

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“…They deduced that db6 provides the best performance among the filter banks examined with respect to the quality of watermarked image and robustness of the watermark. In [2], authors tested eight families of wavelets, both orthogonal and biorthogonal wavelets have been compared, and they deduced that the Haar wavelet outperforms the other wavelet families.…”

Section: Introductionmentioning

confidence: 99%