Improved stego sensitivity measure for ± <i>A</i> steganalysis

Sos S. Agaian; Benjamin M. Rodriguez

doi:10.1117/12.665883

12 May 2006 Improved stego sensitivity measure for ± A steganalysis

Proceedings Volume 6246, Visual Information Processing XV; 62460C (2006) https://doi.org/10.1117/12.665883
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

Abstract

This article addresses four basic goals; 1) the evaluation of sequentially and randomly embedded stego evidence within digital images 2) the identification of "steganographic fingerprint" for special domain based steganographic methods, 3) the reduction of steganalysis false detection rate, and 4) the investigation of two well known pixel comparison based steganalysis methods. We present an improved version of Stego Sensitivity Measure, which is based on the statistics of sample pair (the basic unit), rather than individual samples which is very sensitive to ± A embedding. The presented measure enhances stego detection accuracy and localization of stego areas within sequentially and randomly embedded color or gray scale stego images. In addition, it estimates the message length of an embedded bit-stream within bit planes of a digital image, and it has better localization of steganography detected along with an improved estimation of the message length. It also identifies the "steganographic fingerprint" of special domain sequentially and randomly based steganographic methods. Numerical experimentation was conducted with an arbitrary image database of 200 color TIFF and RAW images taken with the Nikon D100 and the Canon EOS Digital Rebel cameras. In this article comparison are also shown using two known steganalysis methods Raw Quick Pairs and RS Steganalysis which have revealed that; a) The false alarm rate for the proposed detection method is p = 0.9 for a database of 200 images clean images while RS Steganalysis has shown a high false alarm rate for clean images of p = 2.8. b) The two methods Raw Quick Pairs and RS Steganalysis cannot be used for localization of steganographic regions due to the statistical properties of the detection methods.

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Sos S. Agaian and Benjamin M. Rodriguez "Improved stego sensitivity measure for ± A steganalysis", Proc. SPIE 6246, Visual Information Processing XV, 62460C (12 May 2006); https://doi.org/10.1117/12.665883

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KEYWORDS

Steganalysis

Remote sensing

Statistical analysis

Steganography

Error analysis

Databases

Data hiding

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