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Weighted stego-image steganalysis for JPEG covers (2008)
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| Venue: | INFORMATION HIDING. LNCS 5284 |
| Citations: | 15 - 2 self |
BibTeX
@INPROCEEDINGS{Böhme08weightedstego-image,
author = {Rainer Böhme},
title = {Weighted stego-image steganalysis for JPEG covers},
booktitle = {INFORMATION HIDING. LNCS 5284},
year = {2008},
pages = {178--194},
publisher = {Springer-Verlag}
}
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Abstract
This paper contains two new results for the quantitative detector of LSB replacement steganography based on a weighted stegoimage (WS). First, for spatial domain steganalysis, a variant of the WS method is known to be highly accurate only when cover images have never been subject to lossy compression. We propose a new variant of WS which increases the accuracy for JPEG pre-processed covers by one order of magnitude, thus leaving behind the best structural detectors which were known to be more robust on JPEG pre-compressed covers than WS. Second, we explain why WS-like estimators can also detect LSB replacement steganography in the transformed domain, and derive a reduced-form estimator for JSteg steganography which has equal or slightly better performance than the currently best JSteg detectors.
Keyphrases
stego-image steganalysis jpeg cover lsb replacement steganography lossy compression jpeg pre-processed cover jsteg detector ws-like estimator quantitative detector cover image jsteg steganography jpeg pre-compressed cover structural detector spatial domain steganalysis weighted stegoimage new variant reduced-form estimator w method transformed domain new result
