Keyphrases
- image content
- web search
- image database
- image retrieval
- image features
- spatial relationships
- semantic gap
- image representation
- visual content
- web search engines
- image collections
- search engine
- image annotation
- web pages
- automatic image annotation
- image data
- search result
- ad hoc retrieval
- middle level
- image regions
- low level
- personalized search
- text categorization
- search queries