Abstract: Digital images are generated by different sensors, understanding which kind of sensor has acquired a certain image could be crucial in many application scenarios where digital forensic techniques operate. In this article a new methodology which permits to establish if a digital photo has been taken by a photo-camera or has been scanned by a scanner is presented. The specific geometrical features of the sensor pattern noise introduced by the sensor are investigated by resorting to a DFT (Discrete Fourier Transform) analysis and consequently the origin of the digital content is assessed. Experimental results are provided to witness the reliability of the proposed technique.

  url          = {http://www.igi-global.com/Bookstore/Article.aspx?TitleId=41714},
  journal      = {International Journal of Digital Crime and Forensics},
  author       = {Roberto Caldelli and Irene Amerini and Francesco Picchioni},
  number       = {1},
  volume       = {2},
  year         = {2010},
  title        = {A dft-based analysis to discern between camera and scanned images},
  pages        = {21-29},