Evaluation of Integrity Verification System for Video Content Using Digital Watermarking

The effectiveness of a previously proposed system for verifying video content integrity was investigated using a prototype system. Unlike conventional verification systems using digital signatures and fragile watermarking, the proposed verification system embeds timecodes in consecutive frames of the content, extracts them some time later, and checks their continuity to distinguish attacks from regular modifications. Testing demonstrated that the system maintained picture quality, that the watermarks were robust against regular modifications, and that attacks could be detected reliably and be distinguished from regular modifications. This integrity verification system is thus well suited for a variety of applications using video content.

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