CSE725.  Watermarking dates back in History.  Cryptography for protection.  Need of software for ownership protection.

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Presentation transcript:

CSE725

 Watermarking dates back in History.  Cryptography for protection.  Need of software for ownership protection.

 Definition  Imperceptible property  Robustness  Multiple watermarking (Discussed Later )

 Information Embedded unit.  Info. Like owner, timestamp etc.  Watermark detection unit.

 Perceptual Analysis  Information Spreading  Watermark Generation  Secret Key

 Detector provides binary output  Probability of detection and false alarm

 European project  Various agents involved  Main application e-commerce

 Entities involved.  Creation identification number.

 Creator  Creator provider  Distributor  Rights holder  Number issuer  Purchaser  Trusted third party  Search agent

 Additive Noise  Filtering  Cropping  Compression  Rotation and Scaling  Multiple watermarking.

 Video Watermarking  Audio Watermarking  Hardware/Software Watermarking  Text Watermarking  Executable watermarks  Labeling

 Fingerprinting  Copy and playback control

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