Multimedia Operator Chain Topology and Ordering Estimation Based on Detection and Information Theoretic Tools
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.