HYBRID VIDEO FORENSIC WATERMARKING SYSTEM

摘要

PURPOSE: A hybrid video forensic watermarking system is provided to stably extract inserted information even though the inserted information is transformed. CONSTITUTION: A forensic mark inserter(100) generates an insertion pattern using a weighted value in consideration of a robust forensic mark pattern, a fragile forensic mark pattern, and non-visibility. The forensic mark inserter inserts the generated insertion pattern into an original image. A forensic mark extractor(200) performs a correlation operation between a final presumptive pattern and a reference pattern. The forensic mark extractor extracts a robust mark pattern a fragile mark pattern. [Reference numerals] (100) Forensic mark inserter; (110) Robust mark pattern generating unit; (120) Fragile mark pattern generating unit; (130) Masking unit; (140) Mark pattern inserting unit; (200) Forensic mark extractor; (210) Mark pattern calculating unit; (220) Mark pattern accumulating unit; (230) Robust mark pattern extracting unit; (240) Fragile mark pattern generating unit