Multimedia Forensics

demo_Second_Order_CE_Detection.rar

This archive includes a Matlab implementation of the feature extraction routine employed by our tool for contrast-enhancement detection in digital images using second order statistics. The tool is described in A. De Rosa, M. Fontani, M. Massai, A. Piva and M. Barni "Second-Order Statistics Analysis to Cope With Contrast Enhancement Counter-Forensics" IEEE Signal Processing Letters, vol.22, no.8, pp.1132,1136, Aug. 2015. Notice that the code does not include the machine learning part.


MP3_Fake_Quality_Detector.tar.gz

This archive includes a Matlab implementation of a tool allowing to detect whether an MP3 file has been previously encoded with a lower quality and, if this is the case, also estimates the previous bitrate. As such, this tool is a candidate solution for the fake quality detection problem. The tool is described in T. Bianchi, A. De Rosa, M. Fontani, G. Rocciolo, and A. Piva, "Detection and classication of double compressed MP3 audio tracks",  Proceedings of 1st ACM Intl. Workshop on Information Hiding and Multimedia Security,Montpellier, France June 2013. A demo program and a sample dataset are included.


demo-RS-JPEG.rar

This archive includes a Matlab implementation of algorithms used to detect doubly compressed JPEG images that have been resized before the second compression, as described in T.Bianchi, A.Piva, "Reverse Engineering of Double JPEG Compression in the Presence of Image Resizing", Proceedings of WIFS 2012,Tenerife, Spain, Dec. 2012. A demo program and a sample dataset are included.


demo-CFA-Loc.rar

This archive includes a Matlab implementation of an algorithm used to localize tampered regions in color images acquired with a Color Filter Array, as decribed in P.Ferrara, T.Bianchi, A.De Rosa, A.Piva, "Image Forgery Localization via Fine-Grained Analysis of CFA Artifacts", IEEE Transactions on Information Forensics & Security,vol. 7, no. 5, Oct. 2012 (published online June 2012), pp. 1566-1577. A demo program and a sample dataset are included.


DJPG-TIFS2012.rar

This archive includes a Matlab implementation of an algorithm used to localize doubly compressed regions in JPEG images, as decribed in T.Bianchi, A.Piva, "Image Forgery Localization via Block-Grained Analysis of JPEG Artifacts", IEEE Transactions on Information Forensics & Security,  vol. 7, no. 3, June 2012 (published online Feb. 2012), pp. 1003-1017. A demo program and a sample dataset are included.


demo-NA-JPEG.rar

This archive includes a Matlab implementation of an algorithm used to detect the presence of non-aligned double JPEG compression, as decribed in T.Bianchi, A.Piva, "Detection of Nonaligned Double JPEG Compression Based on Integer Periodicity Maps", IEEE Transactions on Information Forensics &; Security, vol. 7,  no. 2, April 2012, pp. 842-848. A demo program and a sample dataset are included.


A-DJPG-ICASSP2011.rar

This archive includes a Matlab implementation of an algorithm used to detect and localize aligned double JPEG compression, as decribed in T.Bianchi, A.De Rosa, A.Piva, "Improved DCT Coefficient Analysis for Forgery Localization in JPEG Images", Proceedings of ICASSP 2011, Prague, Czech Republic, May 2011, pp. 2444-2447.


NA-DJPG-WIFS2011.rar

This archive includes a Matlab implementation of an algorithm used to detect and localize non-aligned double JPEG compression, as decribed in T.Bianchi, A.Piva, "Analysis of Non-Aligned Double JPEG Artifacts for the Localization of Image Forgeries", Proceedings of WIFS 2011, Foz do Iguaçu, Brazil, Nov.-Dec. 2011.


jpeg_toolbox.rar

This archive includes Matlab JPEG Toolbox v1.4. Compiled .mex files for Windows and Linux x64 architectures are also included.


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