22 March 2013 Random projections of residuals as an alternative to co-occurrences in steganalysis
Author Affiliations +
Abstract
Today, the most reliable detectors of steganography in empirical cover sources, such as digital images coming from a known source, are built using machine-learning by representing images with joint distributions (co-occurrences) of neighboring noise residual samples computed using local pixel predictors. In this paper, we propose an alternative statistical description of residuals by binning their random projections on local neighborhoods. The size and shape of the neighborhoods allow the steganalyst to further diversify the statistical description and thus improve detection accuracy, especially for highly adaptive steganography. Other key advantages of this approach include the possibility to model long-range dependencies among pixels and making use of information that was previously underutilized in the marginals of co-occurrences. Moreover, the proposed approach is much more flexible than the previously proposed spatial rich model, allowing the steganalyst to obtain a significantly better trade off between detection accuracy and feature dimensionality. We call the new image representation the Projection Spatial Rich Model (PSRM) and demonstrate its effectiveness on HUGO and WOW – two current state-of-the-art spatial-domain embedding schemes.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Vojtěch Holub, Vojtěch Holub, Jessica Fridrich, Jessica Fridrich, Tomáš Denemark, Tomáš Denemark, } "Random projections of residuals as an alternative to co-occurrences in steganalysis", Proc. SPIE 8665, Media Watermarking, Security, and Forensics 2013, 86650L (22 March 2013); doi: 10.1117/12.1000330; https://doi.org/10.1117/12.1000330
PROCEEDINGS
11 PAGES


SHARE
RELATED CONTENT

Locatability of modified pixels in steganographic images
Proceedings of SPIE (February 13 2012)
New results on robustness of secure steganography
Proceedings of SPIE (February 15 2006)
On locating steganographic payload using residuals
Proceedings of SPIE (February 10 2011)
An adaptive watermarking scheme in the DCT domain
Proceedings of SPIE (September 16 2005)
Steganalysis of recorded speech
Proceedings of SPIE (March 20 2005)

Back to Top