Single image super-resolution via low-rank tensor representation and hierarchical dictionary learning.
Peiguang JingWeili GuanXu BaiHongbin GuoYuting SuPublished in: Multim. Tools Appl. (2020)
Keyphrases
- dictionary learning
- single image super resolution
- low rank
- group sparsity
- sparse coding
- linear combination
- sparse representation
- missing data
- matrix factorization
- high dimensional data
- convex optimization
- unsupervised learning
- singular value decomposition
- semi supervised
- super resolution
- signal processing
- image classification
- low resolution
- high order
- object recognition
- image patches
- visual words
- image representation
- natural images
- computer vision
- small number
- least squares
- high resolution
- high dimensional
- nearest neighbor