Keyphrases
- mid level
- general purpose
- low level
- high level
- low level features
- action recognition
- semantic information
- visual cues
- levels of abstraction
- visual information
- perceptual grouping
- event detection
- superpixels
- knowledge base
- domain knowledge
- multiscale
- semantic gap
- visual concepts
- image retrieval
- higher level
- video content