Keyphrases
- single image super resolution
- feature extraction
- sparse coding
- super resolution
- image classification
- image patches
- low resolution
- dictionary learning
- feature space
- high resolution
- high resolution images
- sparse representation
- feature vectors
- principal component analysis
- image processing
- dimension reduction
- pattern recognition
- dimensionality reduction
- face recognition
- image prior
- feature selection
- generative model
- natural images
- image representation
- linear combination
- bag of words
- visual words
- semi supervised
- wavelet transform
- compressive sensing
- low resolution images