Block orthonormal overcomplete dictionary learning.
Cristian RusuBogdan DumitrescuPublished in: EUSIPCO (2013)
Keyphrases
- dictionary learning
- sparse representation
- sparse coding
- basis functions
- linear combination
- image super resolution
- natural images
- group sparsity
- image classification
- object category recognition
- denoising
- unsupervised learning
- singular value decomposition
- image patches
- face recognition
- high dimensional data
- signal processing
- image representation
- sparse codes
- feature space
- vector valued
- generative model
- prior knowledge
- test images
- ground truth
- nearest neighbor
- dimensionality reduction
- data mining