Print signatures for document authentication

Zhu, Baoshi; Wu, Jiankang; Kankanhalli, Mohan

doi:10.1145/948109.948131

Cited by 60 publications

(30 citation statements)

References 7 publications

(6 reference statements)

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“…In practical applications, however, the detection of the orientation becomes more challenging with increasing orientation directions, especially at high array frequencies (i.e., smaller cell sizes). 3 In the rest of the paper, we, therefore, restrict our attention to binary modulation where the dots are oriented along two orthogonal directions.…”

Section: B Data Encoding In Individual Colorant Channels: Arrays Of mentioning

confidence: 99%

“…For instance, in personal IDs, driving licenses and passports, high capacity can enable the encoding of a sample speech signal, a picture, or other identifying personal information which in turn may be used to establish authenticity of the printed document and/or the identity of the user. Particular examples proposed in the literature include identification cards based upon biometrics [2] and print signatures for document authentication [3]. Similarly, in a document workflow application high capacity barcodes offer an attractive mechanism for improving scanned image quality-where the barcode can be utilized to store the additional information for improving the image quality [4].…”

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confidence: 99%

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High Capacity Color Barcodes: Per Channel Data Encoding via Orientation Modulation in Elliptical Dot Arrays

Bulan

Sharma

2011

IEEE Trans. on Image Process.

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Abstract-We present a new high capacity color barcode. The barcode we propose uses the cyan, magenta, and yellow (C,M,Y) colorant separations available in color printers and enables high capacity by independently encoding data in each of these separations. In each colorant channel, payload data is conveyed by using a periodic array of elliptically shaped dots whose individual orientations are modulated to encode the data. The orientation based data encoding provides beneficial robustness against printer and scanner tone variations. The overall color barcode is obtained when these color separations are printed in overlay as is common in color printing. A reader recovers the barcode data from a conventional color scan of the barcode, using red, green, and blue (R,G,B) channels complementary, respectively, to the print C, M, and Y channels. For each channel, first the periodic arrangement of dots is exploited at the reader to enable synchronization by compensating for both global rotation/scaling in scanning and local distortion in printing. To overcome the color interference resulting from colorant absorptions in noncomplementary scanner channels, we propose a novel interference minimizing data encoding approach and a statistical channel model (at the reader) that captures the characteristics of the interference, enabling more accurate data recovery. We also employ an error correction methodology that effectively utilizes the channel model. The experimental results show that the proposed method works well, offering (error-free) operational rates that are comparable to or better than the highest capacity barcodes known in the literature.Index Terms-Color barcodes, color interference aware encoding, elliptical dot barcodes, high capacity barcodes, sequential decoding.

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Section: B Data Encoding In Individual Colorant Channels: Arrays Of mentioning

confidence: 99%

mentioning

confidence: 99%

High Capacity Color Barcodes: Per Channel Data Encoding via Orientation Modulation in Elliptical Dot Arrays

Bulan

Sharma

2011

IEEE Trans. on Image Process.

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“…Zhu et al focus on identifying "non-repeatable randomness existing in the printing process" [2]. They generate a fingerprint from the random ink splatter that occurs around the edges of any features printed on a page.…”

Section: Related Workmentioning

confidence: 99%

“…Previous systems lack one or more of these properties. For example, Laser Surface Authentication [1] requires a costly laser microscope to image paper texture, while the technique proposed by Zhu et al [2], which focuses on ink splatter caused by randomness in the printing process, requires the paper to be printed with known content prior to fingerprinting. We discuss these and other related work in Section 2.…”

Section: Introduction and Roadmapmentioning

confidence: 99%

Fingerprinting Blank Paper Using Commodity Scanners

Clarkson

Weyrich

Finkelstein

et al. 2009

2009 30th IEEE Symposium on Security and Privacy

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This paper presents a novel technique for authenticating physical documents based on random, naturally occurring imperfections in paper texture. We introduce a new method for measuring the three-dimensional surface of a page using only a commodity scanner and without modifying the document in any way. From this physical feature, we generate a concise fingerprint that uniquely identifies the document. Our technique is secure against counterfeiting and robust to harsh handling; it can be used even before any content is printed on a page. It has a wide range of applications, including detecting forged currency and tickets, authenticating passports, and halting counterfeit goods. Document identification could also be applied maliciously to de-anonymize printed surveys and to compromise the secrecy of paper ballots.

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“…On the other hand, each pattern generated by random processes is a feature not replicable that can be exploited for hylemetric identification (Melen, 1999;Zhu et al, 2003).…”

Section: Introduction To Hylemetrymentioning

confidence: 99%

Biometric-Like Approach for Verifying Artworks Authenticity

Cozzella¹,

Spagnolo²,

Leccese³

2013

APR

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The artwork market is plenty of unauthorized reproduction of original products. One of the most varies filed is the counterfeiting of Authenticity Certificate related to paints, lithography, sculptures, etc., with the aim to create an illegal market of reproduced copies. To resolve this problematic, it is possible change the current paper certificate, related to a single artwork, with a digital version, which will contain some specific information, related to the artwork itself. In this paper, starting with the well-known advantages given by the biometry paradigm in human authentication, we propose a method able to distinguish the single "non-living" objects. In other words, we propose an approach that, by using the random inimitably characteristics, is able to uniquely identify artworks such as painting, lithographs, sculptures, etc. In this way it could be possible creating a secure digital certificate of authenticity (digital COA). Due to the high density information available in modern acquisition media, it is possible using a Speckle Metrology approach. During verification phase, the same area has to be acquired, to extract embedded verification data. It is possible to secure this data using a private key, necessary for accepting the digital signature. The presence of possible geometrical distortions between image present in the certificate and acquired during the verification phase, it is necessary applying geometrical corrections based on affine transformation, before executing the correlation methodologies, used in speckle metrology.

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Print signatures for document authentication

Cited by 60 publications

References 7 publications

High Capacity Color Barcodes: Per Channel Data Encoding via Orientation Modulation in Elliptical Dot Arrays

High Capacity Color Barcodes: Per Channel Data Encoding via Orientation Modulation in Elliptical Dot Arrays

Fingerprinting Blank Paper Using Commodity Scanners

Biometric-Like Approach for Verifying Artworks Authenticity

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