Here, you can download MATLAB implementations of four quantitative LSB detectors: weighted-stego (WS), sample pairs (SP), triples analysis (T), and Asymptotically Uniformly Most Powerful (AUMP) detector as described in their original publications [1-4]. The WS includes the optional bias correction. Usage should be clear from the comments included in each m-file.
The programs are available for public use. Please, do not forget to give us credit by citing this webpage and the appropriate publication.
Thank you.
[1] Sorina Dumitrescu, Xiaolin Wu, Nasir D. Memon, On steganalysis of random LSB embedding in continuous-tone images. Proceedings of ICIP, 2002, Rochester, NY, pp.641-644.
[2] Andrew D. Ker and Rainer Böhme, Revisiting Weighted Stego-Image Steganalysis. Security, Forensics, Steganography, and Watermarking of Multimedia Contents X, Proc. SPIE Electronic Imaging, vol. 6819, San Jose, CA, pp. 0501-0517, 2008.
[3] Andrew D. Ker, A general framework for the structural steganalysis of LSB replacement. Proceedings 7th Information Hiding Workshop, LNCS vol. 3727, pp. 296-311, Barcelona, Spain. Springer-Verlag, 2005.
[4] L. Fillatre, Adaptive steganalysis of Least Significant Bit replacement in grayscale natural images. Signal Processing, IEEE Transactions on, vol. 60, issue 2, pp. 556-569, February 2012.