Research Article
Distinguishing between Camera and Scanned Images by Means of Frequency Analysis
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@INPROCEEDINGS{10.1007/978-3-642-02312-5_11, author={Roberto Caldelli and Irene Amerini and Francesco Picchioni}, title={Distinguishing between Camera and Scanned Images by Means of Frequency Analysis}, proceedings={Forensics in Telecommunications, Information and Multimedia. Second International Conference, e-Forensics 2009, Adelaide, Australia, January 19-21, 2009, Revised Selected Papers}, proceedings_a={E-FORENSICS}, year={2012}, month={5}, keywords={digital forensic source identification scanner sensor noise}, doi={10.1007/978-3-642-02312-5_11} }- Roberto Caldelli
Irene Amerini
Francesco Picchioni
Year: 2012
Distinguishing between Camera and Scanned Images by Means of Frequency Analysis
E-FORENSICS
Springer
DOI: 10.1007/978-3-642-02312-5_11
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.
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