On locating steganographic payload using residuals

Tu-Thach Quach

doi:10.1117/12.871635

10 February 2011 On locating steganographic payload using residuals

Tu-Thach Quach

Proceedings Volume 7880, Media Watermarking, Security, and Forensics III; 78800J (2011) https://doi.org/10.1117/12.871635
Event: IS&T/SPIE Electronic Imaging, 2011, San Francisco Airport, California, United States

Abstract

Locating steganographic payload usingWeighted Stego-image (WS) residuals has been proven successful provided a large number of stego images are available. In this paper, we revisit this topic with two goals. First, we argue that it is a promising approach to locate payload by showing that in the ideal scenario where the cover images are available, the expected number of stego images needed to perfectly locate all load-carrying pixels is the logarithm of the payload size. Second, we generalize cover estimation to a maximum likelihood decoding problem and demonstrate that a second-order statistical cover model can be used to compute residuals to locate payload embedded by both LSB replacement and LSB matching steganography.

Citation Download Citation

Tu-Thach Quach "On locating steganographic payload using residuals", Proc. SPIE 7880, Media Watermarking, Security, and Forensics III, 78800J (10 February 2011); https://doi.org/10.1117/12.871635

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