Keyphrases
- dictionary learning
- sparse coding
- sparse representation
- natural images
- linear combination
- image super resolution
- image classification
- object category recognition
- unsupervised learning
- group sparsity
- image representation
- generative model
- feature space
- sparse codes
- image patches
- higher order
- high dimensional
- test images
- super resolution
- neural network
- multiscale
- computer vision
- learning algorithm
- sparsity constraints
- machine learning