Using PNU-Based Techniques to Detect Alien Frames in Videos

In this paper we discuss about video integrity problem and specifically we analyze whether the method proposed by Fridrich et al. [16] can be exploited for forensic purposes. In particular Fridrich et al. proposed a solution to identify the source camera given an input image. The method relies on the Pixel Non-Uniformity (PNU) noise produced by the sensor and existing in any digital image.