Information Security through Semi-Fragile Watermarking

Shefali,; Deshpande,

doi:10.1109/iccima.2007.248

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…In addition, semi-fragile watermarking algorithms not only can be adopted to tamper detection and localization, but also can have other performance. Shefali and Deshpande [24] put forward a semi-fragile watermarking algorithm to protect image information, which not only could detect the tampered areas in images, but also could be used to declare authentication and authorization. By using DWT, the grayscale still image is decomposed into frequency domain, and multiple, multilevel and multi-energy watermarks are embedded in the image for multi-purposes.…”

Section: Dct Domainmentioning

confidence: 99%

Review on Semi-Fragile Watermarking Algorithms for Content Authentication of Digital Images

Wang

Zhou

2017

Future Internet

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With the popularity of network and the continuous development of multimedia technology, saving of network bandwidth and copyright protection of multimedia content have gradually attracted people's attention. The fragile watermark for integrity authentication of image data and protection of copyright has become a hotspot. In the storage and transmission process, image data must be compressed to save network bandwidth. As a result, semi-fragile watermarking techniques, which can be used to distinguish common image processing operations from malicious tampering, are emerging. In this paper, semi-fragile watermarking algorithms for image authentication are surveyed. The basic principles and characteristics about semi-fragile watermarking algorithms are introduced, and several kinds of attack behaviors are also included. Aiming at several typical image-authentication algorithms, advantages and disadvantages are analyzed, and evaluation indexes of various algorithms are compared. Finally, we analyze the key points and difficulties in the study on semi-fragile watermarking algorithms, and the direction about future development is prospected.

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Section: Dct Domainmentioning

confidence: 99%

Review on Semi-Fragile Watermarking Algorithms for Content Authentication of Digital Images

Wang

Zhou

2017

Future Internet

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“…In recent years, semi-fragile watermarking has gained great development, and many semi-fragile watermarking algorithms have been proposed [1][2][3][4][5][6][7][8]. These algorithms have very good performances in tamper detection and fidelity, but existing semi-fragile watermarking algorithms in spatial domain which mainly use least significant bit (LSB) to embed watermark can't resist normal image operations [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Semi-fragile watermarking resisting differentiation-based image sharpening

Xiao

Wang

2008

2008 9th International Conference on Signal Processing

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Semi-fragile watermarking which is robust to given operations and fragile to conscious operations, is a useful authentication technique for digital media. In this paper, a novel semi-fragile image watermarking algorithm that accepts differentiation-based image sharpening is proposed. In the proposed algorithm, based on the theory of image sharpening, the pixel value and its rate of change are expressed in exponential form with a base of 2, and the watermark is embedded by modifying the parity of the exponent. The robustness and frangibility of the proposed algorithm to given image processes are analyzed, and the results show that the proposed algorithm is very robust to different differentiation-based image sharpening, such as horizontal and vertical difference, Robert Gradient and Sobel operator, while it is very fragile to other attacks, such as Gauss noise, cropping and neighborhood averaging. Namely, the proposed algorithm can distinguish differentiation-based sharpening from other attacks accurately.

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Semi-Fragile Watermarking Based on Image Gradient

Xiao

Wang

2008

2008 International Conference on Computational Intelligence and Security

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Information Security through Semi-Fragile Watermarking

Cited by 6 publications

References 5 publications

Review on Semi-Fragile Watermarking Algorithms for Content Authentication of Digital Images

Review on Semi-Fragile Watermarking Algorithms for Content Authentication of Digital Images

Semi-fragile watermarking resisting differentiation-based image sharpening

Semi-Fragile Watermarking Based on Image Gradient

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