Online adaptive dictionary learning and weighted sparse coding for abnormality detection.
Sheng HanRuiqing FuSuzhen WangXinyu WuPublished in: ICIP (2013)
Keyphrases
- dictionary learning
- sparse coding
- abnormality detection
- sparse representation
- natural images
- linear combination
- group sparsity
- image classification
- unsupervised learning
- sparse codes
- object category recognition
- image representation
- generative model
- visual words
- feature space
- single image super resolution
- image patches
- image data
- motion estimation
- feature extraction
- sparsity constraints
- face recognition
- learning algorithm
- data sets