Forensics in Telecommunications, Information and Multimedia. Second International Conference, e-Forensics 2009, Adelaide, Australia, January 19-21, 2009, Revised Selected Papers

Research Article

Decomposed Photo Response Non-Uniformity for Digital Forensic Analysis

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  • @INPROCEEDINGS{10.1007/978-3-642-02312-5_19,
        author={Yue Li and Chang-Tsun Li},
        title={Decomposed Photo Response Non-Uniformity for Digital Forensic 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 forensics PRNU noise pattern integrity verification source device identification},
        doi={10.1007/978-3-642-02312-5_19}
    }
    
  • Yue Li
    Chang-Tsun Li
    Year: 2012
    Decomposed Photo Response Non-Uniformity for Digital Forensic Analysis
    E-FORENSICS
    Springer
    DOI: 10.1007/978-3-642-02312-5_19
Yue Li1,*, Chang-Tsun Li1,*
  • 1: University of Warwick
*Contact email: yxl@dcs.warwick.ac.uk, ctli@dcs.warwick.ac.uk

Abstract

The last few years have seen the applications of Photo Response Non-Uniformity noise (PRNU) - a unique stochastic fingerprint of image sensors, to various types of digital forensic investigations such as source device identification and integrity verification. In this work we proposed a new way of extracting PRNU noise pattern, called Decomposed PRNU (DPRNU), by exploiting the difference between the andcolor components of the photos taken by digital cameras that use a Color Filter Array for interpolating components from ones. Experimental results presented in this work have shown the superiority of the proposed DPRNU to the commonly used version. We also proposed a new performance metrics, Corrected Positive Rate (CPR) to evaluate the performance of the common PRNU and the proposed DPRNU.