Monday, January 14, 2013

What is PRNU?

PRNU = photo-response non-uniformity (a camera's noise fingerprint).

Identification of the source that has generated a digital image is considered one of the many open issues in the multimedia forensics community. The extraction of photo-response non-uniformity (PRNU) noise has been so far indicated as a means to identify a sensor's fingerprint. Such a fingerprint can be estimated from multiple images taken by the same camera by means of a de-noising filtering operation." From Crime Prevention Technologies and Applications for Advancing Criminal Investigation by Chang-Tsun Li and Anthony Ho.

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