Single Image Super-Resolution via Sparse Representation over Directionally Structured Dictionaries Based on the Patch Gradient Phase Angle.
Mahmoud NazzalFaezeh YeganliHüseyin ÖzkaramanliPublished in: EMS (2014)
Keyphrases
- single image super resolution
- sparse representation
- image patches
- sparse coding
- dictionary learning
- image classification
- learned dictionary
- compressive sensing
- face recognition
- sparse approximations
- sparse codes
- image representation
- signal processing
- high dimensional data
- test images
- random projections
- dimensionality reduction
- image super resolution
- low resolution
- super resolution
- ground truth
- knn