We live in a digital age where images are considered one of the most powerful communication media. In this context, the development of methods for verifying image authenticity is a real need of the modern society.
In this research paper, Tiago Carvalho, Fábio Faria, Hélio Pedrini, Ricardo Torres, and Anderson Rocha have analyzed illuminant maps, as a possible image transformed space that capture, to some degree, the lighting information in a scene and that emphasize telltales left behind during the forgery process.
Experiments performed on three different open-access datasets show the potential of the proposed method for pinpointing image forgeries containing people.
The work introduces three important contributions for the forensic community:
- A confidence metric associated with each classified image;
- A method for effectively pointing out the region of an image that was forged;
- A method for effectively combining different evidence for detecting forgeries.
Carvalho, T.; Faria, F.A.; Pedrini, H.; Torres, R.S.; Rocha, A., “Illuminant-based Transformed Spaces for Image Forensics,” in Information Forensics and Security, IEEE Transactions on , vol.PP, no.99, pp.1-1 doi: 10.1109/TIFS.2015.2506548