Distinguishing between Camera and Scanned Images by Means of Frequency Analysis

  • Roberto Caldelli
  • Irene Amerini
  • Francesco Picchioni
Conference paper

DOI: 10.1007/978-3-642-02312-5_11

Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 8)
Cite this paper as:
Caldelli R., Amerini I., Picchioni F. (2009) Distinguishing between Camera and Scanned Images by Means of Frequency Analysis. In: Sorell M. (eds) Forensics in Telecommunications, Information and Multimedia. e-Forensics 2009. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 8. Springer, Berlin, Heidelberg

Abstract

Distinguishing the kind of sensor which has acquired a digital image could be crucial in many scenarios where digital forensic techniques are called to give answers. In this paper a new methodology which permits to determine if a digital photo has been taken by a camera or has been scanned by a scanner is proposed. Such a technique exploits the specific geometrical features of the sensor pattern noise introduced by the sensor in both cases and by resorting to a frequency analysis can infer if a periodicity is present and consequently which is the origin of the digital content. Experimental results are presented to support the theoretical framework.

Keywords

digital forensic source identification scanner sensor noise 

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Copyright information

© Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2009

Authors and Affiliations

  • Roberto Caldelli
    • 1
  • Irene Amerini
    • 1
  • Francesco Picchioni
    • 1
  1. 1.Media Integration and Communication Center - MICCUniversity of FlorenceFlorenceItaly

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