In the field of imaging device identification, the unique property of Photo-Response Non-Uniformity (PRNU) is
widely employed. One of disadvantages of the PRNU based methods is sensitive to de-synchronization attacks.
In this paper, we propose an improved PRNU based camcorder identification method which performs well with
simultaneously cropped and scaled videos. The proposed method solves the out-of-sync problems by achieving
downscale-tolerance of Minimum Average Correlation Energy Mellin Radial Harmonic (MACE-MRH) filter. The
experimental results demonstrate that the proposed method identifies source devices faster and more accurate
than the existing method.
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