Fraunhofer Institute for Digital Media Technology IDMTWith the rapid proliferation of inexpensive acquisition and storage devices, multimedia objects can be easily created, stored, transmitted, modified and tampered with by anyone. During its lifetime, a digital object might go through several processing stages, including multiple analog-to-digital (A/D) and digital-to-analog (D/A) conversions, coding and decoding, transmission, editing (either aimed at enhancing the quality, creating new content, mixing pre-existing material, or tampering with the content).
The REWIND project starts from the fact that each of these processing steps necessarily leaves a characteristic footprint, which can be potentially detected and analyzed to trace back the past history of the available multimedia object in a blind fashion, i.e. without having access to the original content. The project develops a comprehensive set of new mathematical models and techniques for footprint detection, applicable also for complex processing chains, and development of tools for phylogeny analysis.
Responsibilities of Fraunhofer IDMT
- Coordination of requirement analysis, use-case driven R&D and evaluation of detectors
- Development of a framework for automatic testing of detectors