Abstract
The extensive use of multimedia editing tools suitable for non-skilled users has significantly reduced the trust on audiovisual contents. Simultaneously, a new branch of multimedia security, named multimedia forensics, has been developed to cope with this problem. Nevertheless, most of the schemes proposed so far are heuristic and ad-hoc solutions that try to deal with a particular signal processing operator (or a simple combination of them). In a previous work by the authors, fundamental limits to forensics applications are provided, based on the use of two well-known measures, originated at the detection and information theory fields. In the current work the suitability of those measures for establishing the topology and ordering of the operator chain a multimedia content has gone through is illustrated. The provided results show that in general different operator chains can be distinguished, although in some particular cases (e.g., comparison between double and triple quantization) the considered operator chains can be completely indistinguishable.
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Comesaña, P., Pérez-González, F. (2013). Multimedia Operator Chain Topology and Ordering Estimation Based on Detection and Information Theoretic Tools. In: Shi, Y.Q., Kim, HJ., Pérez-González, F. (eds) The International Workshop on Digital Forensics and Watermarking 2012. IWDW 2012. Lecture Notes in Computer Science, vol 7809. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-40099-5_18
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DOI: https://doi.org/10.1007/978-3-642-40099-5_18
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