Perceiving spatiotemporal traffic anomalies from sparse representation-modeled city dynamics.
Jun GaoDaqing ZhengSu YangPublished in: Pers. Ubiquitous Comput. (2023)
Keyphrases
- sparse representation
- vehicular traffic
- traffic patterns
- dictionary learning
- sparse coding
- anomaly detection
- joint optimization
- image classification
- reconstruction error
- signal processing
- face recognition
- image patches
- negative matrix factorization
- random projections
- compressive sensing
- compressed sensing
- regularized least squares
- traffic flow
- moving objects
- piecewise smooth
- image representation
- sparse coefficients
- norm minimization
- object tracking
- high dimensional data
- image segmentation
- test images
- sparsity constraints
- sparse reconstruction
- sparse approximations
- super resolution
- sparse learning
- image sequences