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Filters: Author is Schöttle, Pascal  [Clear All Filters]
2017-05-30
Pasquini, Cecilia, Schöttle, Pascal, Böhme, Rainer, Boato, Giulia, Pèrez-Gonzàlez, Fernando.  2016.  Forensics of High Quality and Nearly Identical JPEG Image Recompression. Proceedings of the 4th ACM Workshop on Information Hiding and Multimedia Security. :11–21.

We address the known problem of detecting a previous compression in JPEG images, focusing on the challenging case of high and very high quality factors (textgreater= 90) as well as repeated compression with identical or nearly identical quality factors. We first revisit the approaches based on Benford–Fourier analysis in the DCT domain and block convergence analysis in the spatial domain. Both were originally conceived for specific scenarios. Leveraging decision tree theory, we design a combined approach complementing the discriminatory capabilities. We obtain a set of novel detectors targeted to high quality grayscale JPEG images.