Single image super-resolution based on sparse representation using edge-preserving regularization and a low-rank constraint.
Rui GaoDeqiang ChengQiqi KouLiangliang ChenPublished in: IET Image Process. (2023)
Keyphrases
- low rank
- sparse representation
- high dimensional data
- sparse coding
- dictionary learning
- linear combination
- image patches
- missing data
- convex optimization
- matrix factorization
- compressive sensing
- singular value decomposition
- dimensionality reduction
- image classification
- edge preserving
- high order
- semi supervised
- test images
- low dimensional
- high dimensional
- data analysis
- random projections
- face recognition
- image representation
- data sets
- nearest neighbor
- data points
- piecewise smooth
- machine learning
- signal processing
- object recognition
- feature extraction
- total variation
- image restoration
- input data
- image processing