Improved Forensic Photo Manipulation Localization

Acquisition of a photograph with a digital camera introduces many characteristic fingerprints that might be used as forensic features to address questions regarding the photo's origin, integrity, or processing history. By analyzing these features for various regions of the photograph, it becomes possible to detect anomalies and indicate which fragments of the image were affected by malicious tampering. However, reliable extraction of forensic features requires to analyze large image regions which is clearly contradictory with the desired high resolution of the resulting tampering map. My postdoctoral research focuses on the techniques for improving tampering localization capabilities by adopting multi-scale analysis.