Watermarking JBIG2 text region for image authentication

Pamboukian, Sergio Vicente Denser; Kim, Hae Yong; Queiroz, Ricardo L. de

doi:10.1109/icip.2005.1530246

Cited by 6 publications

(13 citation statements)

References 16 publications

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“…The resultant images are named as MAX and MIN. the threshold image T, which represents the threshold levels for all pixels in Gray, is produced by using relation (2). Then, the Gray is matched against T to produce the binary image Binary, by applying the relation (3).…”

Section: A the Image Binarizationmentioning

confidence: 99%

“…It is often true that a large part of these images is confidential, private or both, which increases the demand for stronger protection and authentication schemes [1]. "Data Hiding" schemes are the preferred techniques for protecting the transmitted image data [2]. A "Data Hiding" scheme means a technique to embed a sequence of bits in a host image with small visual aspect and to extract it afterwards [3].…”

Section: Introductionmentioning

confidence: 99%

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Blocks - Based Data Hiding Approach for Electronic Cheque Authentication

Zeydan¹

2012

JNUS

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This research, suggests a combination of digital representation and authentication methods to electronically transfer the typical paper-based bank cheque between banks over open and insecure computer networks like Internet. This proposed combination would be a senderreceiver protocol. At the sender side, a scanned colored image of the bank cheque would be transformed to a binary image, and a sequence of bits would be extracted from it and embedded back into it again as a content-dependent authentication signature (AS) which would be computed by using some image data and a secret key. At the receiver side, the AS would be extracted from the signed binary cheque image (the host image) in order to verify the cheque's authenticity; and to locate any illegal alterations that may be done in the host image by malicious hackers during the transmission. Both AS extraction and embedding methods are blocks-based methods in order to locate the exact blocks where the undesirable modifications may be done in the host image. Some experimental results and mathematical metrics would be tested to demonstrate the validity of the suggested data hiding approach. The conclusions would show that this suggested approach can be used to electronically sign the binary cheque image without causing noticeable loss of its visual quality; and with much storage and band saving during the electronic transfer between the sender and the receiver.

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Section: A the Image Binarizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Blocks - Based Data Hiding Approach for Electronic Cheque Authentication

Zeydan¹

2012

JNUS

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“…Queiroz and we have very recently proposed an AWT for JBIG2-encoded images (possibly lossy-compressed), named AWTRJ (Authentication Watermarking by Template Ranking for JBIG2) [7]. Unfortunately, AWTRJ (especially its public-key version) can be assaulted by parity attacks.…”

Section: Raphymentioning

confidence: 99%

“…To the best of our knowledge, Queiroz and we have proposed the only AWT for JBIG2-encoded binary images (possibly lossy-compressed) [7]. This technique is named AWTRJ (Authentication Watermarking by Template Ranking for JBIG2).…”

Section: Awtrjmentioning

confidence: 99%

New Public-Key Authentication Watermarking for JBIG2 Resistant to Parity Attacks

Pamboukian

Kim

2005

Digital Watermarking

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An authentication watermark is a hidden data inserted into an image that allows detecting any alteration made in the image. AWTs (Authentication Watermarking Techniques) normally make use of secret-or public-key cryptographic cipher to compute the authentication signature of the image, and inserts it into the image itself. Many previous public-key AWTs for uncompressed binary images can be attacked by an image adulterating technique named "parity attack." JBIG2 is an international standard for compressing bi-level images (both lossy and lossless). The creation of secure AWTs for compressed binary images is an important practical problem. However, it seems that no AWT for JBIG2 resistant to parity attacks has ever been proposed. This paper proposes a new data-hiding method to embed information in the text region of JBIG2 files. Then, we use this technique to design a new AWT for JBIG2-encoded images resistant to parity attacks. Both the secret-and public-key versions of the proposed AWT are completely immune against parity attacks. Moreover, watermarked images are visually pleasant, without visible salt and pepper noise. Image authenticity verification can be performed in either JBIG2 file itself or in the binary image obtained by decoding the JBIG2 file.

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“…The computed signature is embedded into 3 × 3 blocks of the image. In [8], a message authentication code is embedded into a JBIG-2 binary image by modifying the positions of symbols. In [9], a two-layer blind binary image authentication scheme was proposed.…”

Section: Introductionmentioning

confidence: 99%

Robust Document Image Authentication

Ji¹,

Wong²,

Memon³

2007

Multimedia and Expo, 2007 IEEE International Conference On

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In this paper, we propose a novel method for robust document image authentication. In the proposed method, characters and symbols on a binary document are first grouped into different classes based on k-means clustering in the feature space. Labels are then assigned to the different classes. An ordered sequence of labels formed from the characters and symbols on the document is then used to compute a digital signature. This is achieved by using a cryptographic hash function and a secret key. The computed signature can be appended at the end of an electronic document file, or printed on a hardcopy document in the form of a bar code. Using this method, we will be able to detect any intentional content alteration to the document, but at the same time tolerate moderate amount of noise introduced by printing, scanning, and photocopying of the document. Experimental results demonstrate the effectiveness of the proposed approach.

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Watermarking JBIG2 text region for image authentication

Abstract: A template ranking with all possible 3×3 templates (mirrors, rotations and reverses of each pattern have the same score).

Cited by 6 publications

References 16 publications

Blocks - Based Data Hiding Approach for Electronic Cheque Authentication

Blocks - Based Data Hiding Approach for Electronic Cheque Authentication

New Public-Key Authentication Watermarking for JBIG2 Resistant to Parity Attacks

Robust Document Image Authentication

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