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The use of dashboard-mounted video cameras is rapidly spreading in many countries around the world. Widespread usage of dash-cams brings new problems, for example, dash-cam videos are uploaded on public websites which contain footage of other cars with the number-plates visible. This can potentially compromise privacy. Further, dash-cam videos can be used as evidence in case of accidents. There have...
Median filtering is one of the most popular image anti-forensic technique. Due to its nonlinearity, median filtering effectively hides traces of different types of image manipulation and therefore is integrated into several Anti-Forensic algorithms. As a result, the detection of median filtering has become of great significance for forensic analysis. To this end, several median filtering detectors...
Photo response nonuniformity (PRNU) is consider as reliable camera fingerprint for identifying source of a digital images. Digital cameras use various image processing operations to map linear color measurements (raw data) into nonlinear narrow gamut image. This nonlinear transformation affects estimation of PRNU. To undo the effect of nonlinear transformation, in this letter, we propose to estimate...
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