Keyphrases
- dictionary learning
- sparse representation based classification
- sparse representation
- sparse coding
- image super resolution
- face recognition
- natural images
- object category recognition
- group sparsity
- image classification
- data sets
- multiscale
- similarity measure
- machine learning
- co occurrence
- text mining
- generative model
- denoising
- visual words
- ground truth
- high dimensional
- feature selection