A High-Capacity Image Data Hiding Scheme Using Adaptive LSB Substitution

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dc.contributor.authorYang, Hengfu
dc.contributor.authorSun, Xingming
dc.contributor.authorSun, Guang
dc.coverage.issue4cs
dc.coverage.volume18cs
dc.date.accessioned2016-03-18T08:55:52Z
dc.date.available2016-03-18T08:55:52Z
dc.date.issued2009-12cs
dc.description.abstractMany existing steganographic methods hide more secret data into edged areas than smooth areas in the host image, which does not differentiate textures from edges and causes serious degradation in actual edge areas. To avoid abrupt changes in image edge areas, as well as to achieve better quality of the stego-image, a novel image data hiding technique by adaptive Least Significant Bits (LSBs) substitution is proposed in this paper. The scheme exploits the brightness, edges, and texture masking of the host image to estimate the number k of LSBs for data hiding. Pixels in the noise non-sensitive regions are embedded by a k-bit LSB substitution with a lager value of k than that of the pixels in noise sensitive regions. Moreover, an optimal pixel adjustment process is used to enhance stego-image visual quality obtained by simple LSB substitution method. To ensure that the adaptive number k of LSBs remains unchanged after pixel modification, the LSBs number is computed by the high-order bits rather than all the bits of the image pixel value. The theoretical analyses and experiment results show that the proposed method achieves higher embedding capacity and better stegoimage quality compared with some existing LSB methods.en
dc.formattextcs
dc.format.extent509-516cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2009, vol. 18, č. 4, s. 509-516. ISSN 1210-2512cs
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/57143
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2009/09_04_509_516.pdfcs
dc.rightsCreative Commons Attribution 3.0 Unported Licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en
dc.subjectData Hidingen
dc.subjectAdaptive Least Significant Bits Substitutionen
dc.subjectHuman Visual Systemen
dc.subjectHigh Embedding Capacityen
dc.subjectOptimal Pixel Adjustment Processen
dc.titleA High-Capacity Image Data Hiding Scheme Using Adaptive LSB Substitutionen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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