Semi-automatic registration of videos for improved watermark detection
MMSys '10 Proceedings of the first annual ACM SIGMM conference on Multimedia systems
An adaptive digital image watermarking technique for copyright protection
IEEE Transactions on Consumer Electronics
Saliency detection for stereoscopic video
Proceedings of the 4th ACM Multimedia Systems Conference
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In the efforts to fight piracy of high-valued media content, forensic digital watermarking as a passive content security scheme is a potential alternative to current, restrictive approaches like DRM. In this paper, we present a novel watermarking scheme for videos based on affine geometric transformations. Frames can be modified in an imperceptible manner by applying a small, global rotation, translation, or zooming, which can be detected later on by comparison with the originals. To compensate geometric distortions that have been introduced while a video travels down legal as well as illegal distribution chains, a spatio-temporal synchronization is performed using our video registration toolkit application. To evaluate our approach, we compare it with several other schemes regarding the robustness against common attacks, including camcorder capture.