Non-negative matrix factorization of signals with overlapping events for event detection applications.
Shiqiang WangJorge OrtizPublished in: ICASSP (2017)
Keyphrases
- event detection
- negative matrix factorization
- event recognition
- video event detection
- matrix factorization
- principal component analysis
- sparse representation
- activity recognition
- composite events
- document clustering
- signal processing
- video analysis
- video event
- semantic event detection
- databases
- sports video
- spectral clustering
- complex events
- active database management systems
- unsupervised learning
- computer vision
- information retrieval
- data sets