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dc.contributor.authorTan, L.
dc.contributor.authorSun, X.
dc.contributor.authorSun, G.
dc.date.accessioned2015-01-22T09:23:56Z
dc.date.available2015-01-22T09:23:56Z
dc.date.issued2012-04cs
dc.identifier.citationRadioengineering. 2012, vol. 21, č. 1, s. 170-181. ISSN 1210-2512cs
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/37027
dc.description.abstractPrint-scan resilient watermarking has emerged as an attractive way for document security. This paper proposes an stroke direction modulation technique for watermarking in Chinese text images. The watermark produced by the idea offers robustness to print-photocopy-scan, yet provides relatively high embedding capacity without losing the transparency. During the embedding phase, the angle of rotatable strokes are quantized to embed the bits. This requires several stages of preprocessing, including stroke generation, junction searching, rotatable stroke decision and character partition. Moreover, shuffling is applied to equalize the uneven embedding capacity. For the data detection, denoising and deskewing mechanisms are used to compensate for the distortions induced by hardcopy. Experimental results show that our technique attains high detection accuracy against distortions resulting from print-scan operations, good quality photocopies and benign attacks in accord with the future goal of soft authentication.en
dc.formattextcs
dc.format.extent170-181cs
dc.format.mimetypeapplication/pdfen
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2012/12_01_0170_0181.pdfcs
dc.rightsCreative Commons Attribution 3.0 Unported Licenseen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en
dc.subjectText image watermarkingen
dc.subjectprint-photocopy-scanen
dc.subjectstroke direction modulationen
dc.subjectjunctionsen
dc.titlePrint-Scan Resilient Text Image Watermarking Based on Stroke Direction Modulation for Chinese Document Authenticationen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
dc.coverage.issue1cs
dc.coverage.volume21cs
dc.rights.accessopenAccessen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen


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