Abstract
This paper contains two new results for the quantitative detector of LSB replacement steganography based on a weighted stego-image (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.
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Böhme, R. (2008). Weighted Stego-Image Steganalysis for JPEG Covers. In: Solanki, K., Sullivan, K., Madhow, U. (eds) Information Hiding. IH 2008. Lecture Notes in Computer Science, vol 5284. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-88961-8_13
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DOI: https://doi.org/10.1007/978-3-540-88961-8_13
Publisher Name: Springer, Berlin, Heidelberg
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