Titre :

Revisiting Perturbed Quantization

Auteur(s) :

Butora, Jan [Auteur]
Centre de Recherche en Informatique, Signal et Automatique de Lille - UMR 9189 [CRIStAL]
Fridrich, Jessica [Auteur]
Binghamton University [SUNY]

Titre de la manifestation scientifique :

IH&MMSec '21: ACM Workshop on Information Hiding and Multimedia Security

Organisateur(s) de la manifestation scientifique :

Association for Computing Machinery

Ville :

Bruxelles

Pays :

Belgique

Date de début de la manifestation scientifique :

2021-06-22

Titre de l’ouvrage :

IH&MMSec '21: Proceedings of the 2021 ACM Workshop on Information Hiding and Multimedia Security

Éditeur :

ACM

Date de publication :

2021-06-21

Mot(s)-clé(s) en anglais :

Steganography
double compression
perturbed quantization
side information
contributing mode

Discipline(s) HAL :

Informatique [cs]/Traitement du signal et de l'image [eess.SP]
Informatique [cs]/Cryptographie et sécurité [cs.CR]

Résumé en anglais : [en]

In this work, we revisit Perturbed Quantization steganography with modern tools available to the steganographer today, including near-optimal ternary coding and content-adaptive embedding with side-information. In PQ, ...
Lire la suite >In this work, we revisit Perturbed Quantization steganography with modern tools available to the steganographer today, including near-optimal ternary coding and content-adaptive embedding with side-information. In PQ, side-information in the form of rounding errors is manufactured by recompressing a JPEG image with a judiciously selected quality factor. This side-information, however, cannot be used in the same fashion as in conventional side-informed schemes nowadays as this leads to highly detectable embedding. As a remedy, we utilize the steganographic Fisher information to allocate the payload among DCT modes. In particular, we show that the embedding should not be constrained to contributing coefficients only as in the original PQ but should be expanded to the so-called "contributing DCT modes. " This approach is extended to color images by slightly modifying the SI-UNIWARD algorithm. Using the best detectors currently available, it is shown that by manufacturing side information with double compression, one can embed the same amount of information into the doubly-compressed cover image with a significantly better security than applying J-UNIWARD directly in the single-compressed image. At the end of the paper, we show that double compression with the same quality makes side-informed steganography extremely detectable and should be avoided.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Centre de Recherche en Informatique, Signal et Automatique de Lille (CRIStAL) - UMR 9189

Source :

Harvested from HAL