A comprehensive study of sparse codes on abnormality detection.
Huamin RenHong PanSøren Ingvor OlsenThomas B. MoeslundPublished in: CoRR (2016)
Keyphrases
- abnormality detection
- sparse codes
- sparse coding
- image classification
- dictionary learning
- sparse representation
- discriminative power
- linear classifiers
- image patches
- natural images
- image representation
- classification error
- linear combination
- multiscale
- unsupervised learning
- generative model
- bag of words
- action recognition
- signal processing
- higher order
- pattern recognition
- feature extraction