Fragile image watermarking using a gradient image for improved localization and security

Suthaharan, Shan

doi:10.1016/j.patrec.2004.08.017

Cited by 94 publications

(39 citation statements)

References 6 publications

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“…A set of minute changes can inadvertently modify it. The key objective of providing sensitivity is established by using stipulated procedures like the ones used in [5][6][7][8][9][10][11]. Authors in ref.…”

Section: Fragile Watermarkingmentioning

confidence: 99%

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Detection of Image Tampering over Diverse information Security Schemata: A State-of-the-Art

Pande¹,

Patil²,

Bhattacharya³

2014

IJCA

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Many recent technologies in the field of image processing have necessitated the attention to the field of image forensics. Increase in cyber communication system and availability of advanced digital processing tools, in the past decades has given birth to forgery attempts. Irrespective of various approaches used to protect the Image, proving integrity of the image received in communication is a difficult issue. Under such circumstances, no image can be treated secure against breaches. Moreover, knowledge of the manipulation model is a must for detecting a certain type of tampering.The aim of this paper is to highlight new developments regarding detection of tampering in comparison of various schemata used in the past decades for forgery detection. An assortment of various models used for providing information security to image based on authentication, integrity and confidentiality is presented. Methods of tamper detection have been assessed over the type of attack. An in depth classification of types of image security has been proposed which emphasizes total security issues. The paper puts forward chief developments in schemata of tampering detection. General Terms

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Section: Fragile Watermarkingmentioning

confidence: 99%

“…Here the watermark is used as a synchronization template. Shan Suthaharan in [11] emphasized fragile watermarking algorithm for image authentication and tamper detection over gradient image. It provided more security to certain attacks like vector quantization attack.…”

Section: Fragile Watermarkingmentioning

confidence: 99%

Detection of Image Tampering over Diverse information Security Schemata: A State-of-the-Art

Pande¹,

Patil²,

Bhattacharya³

2014

IJCA

View full text Add to dashboard Cite

show abstract

“…For each usable pixel , denoting the value of the unchangeable pixel belonging to a same patch as , calculate the new value of the usable pixel by using a DE operation (4) where is the reference-bit or check-bit mapping the usable pixel. Equation (4) implies that the difference between each usable pixel and its unchangeable pixel is doubled, and the least significant bit of the new difference-value is exploited to accommodate the corresponding watermark-bit. Obviously, new values of all usable pixels are within .…”

Section: ) De Embeddingmentioning

confidence: 99%

Fragile Watermarking With Error-Free Restoration Capability

Zhang

Wang

2008

IEEE Trans. Multimedia

139

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Abstract-This paper proposes a novel fragile watermarking scheme capable of perfectly recovering the original image from its tampered version. In the scheme, a tailor-made watermark consisting of reference-bits and check-bits is embedded into the host image using a lossless data hiding method. On the receiver side, by comparing the extracted and calculated check-bits, one can identify the tampered image-blocks. Then, the reliable reference-bits extracted from other blocks are used to exactly reconstruct the original image. Although content replacement may destroy a portion of the embedded watermark data, as long as the tampered area is not too extensive, the original image information can be restored without any error.Index Terms-Error-free restoration, fragile watermarking, lossless data hiding.

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“…In addition, the attached signature needs more storage or additional bandwidth, but they may not always be obtained [12]. Suthaharan [13] enhanced Wong's proffered security by using a gradient image and its bit distribution properties to generate a huge key space to counter any vector quantization attack. A geometric attack is recognized as one of the most difficult attacks to resist.…”

Section: Introductionmentioning

confidence: 99%

A Maximum Entropy-Based Chaotic Time-Variant Fragile Watermarking Scheme for Image Tampering Detection

Chen

Yau

Yang

2013

Entropy

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Abstract:The fragile watermarking technique is used to protect intellectual property rights while also providing security and rigorous protection. In order to protect the copyright of the creators, it can be implanted in some representative text or totem. Because all of the media on the Internet are digital, protection has become a critical issue, and determining how to use digital watermarks to protect digital media is thus the topic of our research. This paper uses the Logistic map with parameter u = 4 to generate chaotic dynamic behavior with the maximum entropy 1. This approach increases the security and rigor of the protection. The main research target of information hiding is determining how to hide confidential data so that the naked eye cannot see the difference. Next, we introduce one method of information hiding. Generally speaking, if the image only goes through Arnold's cat map and the Logistic map, it seems to lack sufficient security. Therefore, our emphasis is on controlling Arnold's cat map and the initial value of the chaos system to undergo small changes and generate different chaos sequences. Thus, the current time is used to not only make encryption more stringent but also to enhance the security of the digital media.

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Fragile image watermarking using a gradient image for improved localization and security

Cited by 94 publications

References 6 publications

Detection of Image Tampering over Diverse information Security Schemata: A State-of-the-Art

Detection of Image Tampering over Diverse information Security Schemata: A State-of-the-Art

Fragile Watermarking With Error-Free Restoration Capability

A Maximum Entropy-Based Chaotic Time-Variant Fragile Watermarking Scheme for Image Tampering Detection

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