PRNU-Based Camera Attribution from Multiple Seam-Carved Images

Home / Publications / PRNU-Based Camera Attribution from Multiple Seam-Carved Images

Samet Taspinar, Manoranjan Mohanty and Nasir Memon

Photo Response Non-Uniformity (PRNU) noisebased source attribution is a well known technique to verify the camera of an image or video. Researchers have proposed various countermeasures to prevent PRNU-based source camera attribution. Forced seam-carving is one such recently proposed counter forensics technique. This technique can disable PRNUbased source camera attribution by forcefully removing seams such that the size of most uncarved image blocks is less than 50 × 50 pixels. In this paper, we show that given multiple seamcarved images from the same camera, source attribution can still be possible even if the size of uncarved blocks in the image is less than the recommended size of 50 × 50 pixels.