Keyphrases
- information retrieval
- web documents
- document collections
- document images
- visual information
- document classification
- retrieval systems
- keywords
- fragile watermarking
- semantically relevant
- security mechanisms
- visual perception
- computer programs
- document clustering
- semantic information
- visual features
- low level
- document retrieval
- text documents
- vector space model
- information retrieval systems
- document analysis
- document content
- identity authentication
- programming language