Keyphrases
- sparse coding
- sparse representation
- dictionary learning
- single image super resolution
- sparse codes
- natural images
- image patches
- image classification
- discriminative power
- linear combination
- image representation
- face recognition
- unsupervised learning
- person re identification
- feature space
- dimensionality reduction
- generative model
- test images
- compressive sensing
- high dimensional data
- signal processing
- high dimensional
- data sets
- visual words
- denoising
- group sparsity
- object category recognition
- face images
- higher order
- object detection
- clustering algorithm
- computer vision