Keyphrases
- aerial images
- shape retrieval
- aerial imagery
- urban areas
- information retrieval
- road extraction
- camera images
- image database
- document retrieval
- retrieval model
- retrieval systems
- relevance feedback
- image retrieval
- image processing
- query expansion
- retrieval method
- comparative evaluation
- vector data
- line segments
- test collection
- image data
- multimedia