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Definition Imperceptible property Robustness Multiple watermarking (Discussed Later )
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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
Questions?
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