Keyphrases
- text retrieval
- complex background
- visual information
- keywords
- visual features
- detection algorithm
- web images
- database
- low level
- video search
- semantic content
- automatic detection
- natural language generation
- detection method
- document analysis
- news video
- text information
- textual data
- string matching
- biometric systems
- automatically extracted
- text documents
- web documents
- information retrieval