Abnormal event detection using local sparse representation.
Huamin RenThomas B. MoeslundPublished in: AVSS (2014)
Keyphrases
- sparse representation
- abnormal event detection
- abnormal events
- dictionary learning
- sparse coding
- face recognition
- image classification
- dimensionality reduction
- random projections
- image patches
- reconstruction error
- sparse approximations
- joint optimization
- signal processing
- daily life
- image representation
- negative matrix factorization
- compressive sensing
- sparse reconstruction
- high dimensional data
- compressed sensing
- piecewise smooth
- data sets
- regularized least squares
- norm minimization
- principal component analysis
- multiscale
- feature extraction
- sparse learning
- decision trees
- image processing