Research Article
Decomposed Photo Response Non-Uniformity for Digital Forensic Analysis
@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
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.
