Keyphrases
- digital images
- watermarking scheme
- copyright protection
- watermarking algorithm
- image watermarking
- robust image watermarking
- fragile watermarking
- databases
- data hiding
- spread spectrum
- information systems
- geometric attacks
- digital image watermarking
- watermarking technique
- watermark embedding
- information hiding
- image quality
- multiresolution
- information retrieval
- machine learning