Mostrar el registro sencillo del ítem

dc.contributor.authorLópez Hernández, Fernando (1)
dc.contributor.authorGiménez de Ory, Elena (1)
dc.contributor.authorRÍos Aguilar, Sergio (1)
dc.contributor.authorGonzález-Crespo, Rubén (1)
dc.date2018-06
dc.date.accessioned2018-08-01T15:51:54Z
dc.date.available2018-08-01T15:51:54Z
dc.identifier.issn1872-9681
dc.identifier.urihttps://reunir.unir.net/handle/123456789/6725
dc.description.abstractTtaditionally, a statistical approach has been used to detect the JPEG quantization table used to compressa bitmap. This approach has the disadvantage that at times false solutions are found. These false solutions may have important implications if, for example, a court expert issues an incorrect assessment on whether an image is forged. This paper develops the concept of residue properties, which enables us to determine the quantization table following an arithmetic approach. This study shows that these properties allow us to ensure that no false solutions are produced, but at the cost of being able to obtain more than one compatible solution. Sometimes we prefer to find this set of possible Q values (quantization values) used, without risking obtaining a false solution. If we choose to obtain a unique answer for Q, then we can perform a statistical analysis on this pruned space of compatible solutions to decide the most probable Q value. In this way, a higher success rate is obtained than if we perform only a statistical soft computing analysis on the total space of solutions. (C) 2018 Elsevier B.V. All rights reserved.es_ES
dc.language.isoenges_ES
dc.publisherApplied Soft Computinges_ES
dc.relation.ispartofseries;vol. 67
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S1568494618301339es_ES
dc.rightsrestrictedAccesses_ES
dc.subjectimage forensicses_ES
dc.subjectJPEGes_ES
dc.subjectquantization tablees_ES
dc.subjectsoft computinges_ES
dc.subjectquantization estimationes_ES
dc.subjectresidue propertiesaes_ES
dc.subjectJCRes_ES
dc.subjectScopuses_ES
dc.titleResidue properties for the arithmetical estimation of the image quantization tablees_ES
dc.typeArticulo Revista Indexadaes_ES
reunir.tag~ARIes_ES
dc.identifier.doihttps://doi.org/10.1016/j.asoc.2018.03.017


Ficheros en el ítem

FicherosTamañoFormatoVer

No hay ficheros asociados a este ítem.

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem