Li, Y. and Li, C.-T. (2009) Decomposed Photo response Non-Uniformity for Digital Forensic Analysis. In: International Conference on Forensic Applications and Techniques in Telecommunications, Information and Multimedia (e-Forensics 09), 19-21 January, 2009, Adelaide, Australia.

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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 physical andartificial color components of the photos taken by digital cameras that use a Color Filter Array for interpolating artificial components from physical 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.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	pcav image
Subjects:	Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions:	Faculty of Science > Computer Science
Depositing User:	Nadeem Chaudhary
Date Deposited:	25 May 2012 13:26
Last Modified:	25 May 2012 14:26
URI:	http://eprints.dcs.warwick.ac.uk/id/eprint/1626

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