The REWIND (REVerse engineering of audio- VIsual coNtent Data) project starts from the observation that each processing step applied to multimedia content necessarily leaves a characteristic footprint, which can potentially be detected to trace the history of the object. It should be noted that, in many cases, these processing steps introduce undesired and irreversible distortions (“misprints”) in the original multimedia object, for example, due to insufficient sampling rate in the acquisition phase, coding artifacts, etc.. Considerable efforts in multimedia processing research have been directed at reducing these artifacts.
REWIND intends to develop innovative tools and approaches to reverse this perspective completely: footprints are considered an asset, i.e. a source of additional information about the history of the multimedia object, which can be leveraged to reconstruct the processing chain applied to the audio-video digital object.