Watermarking:
Applications and Current State of the Art

Outline

Data Embedding

Application

Application

Application

SDMI Requirements

Application

Data Embedding Issues

Masking and Data Embedding

Masking

Example:  Frequency masking
in audio

Spatial Masking

Data Embedding Issues

Data Embedding Capacity

Data Embedding Issues

Robustness Issues

SDMI Requirements

Rotation and Scaling

Cropping

Data Embedding Techniques

Additive Techniques

Data Extraction

Additive Techniques

Spread-spectrum Techniques

Spread-spectrum Communications

Additive Data Embedding Schemes

Spread-spectrum Communications

Additive Techniques

Modulation Based Data Embedding Schemes

LSB Approaches

Projection Approach

Quantization

Projection Approach

Incorrect Scale

Coding Robustness

Synchronization Problems

Self-Synchronizing Approaches

Self-Synchronizing Approaches

Comparisons

Conclusion