Dictionary Learning and Sparse Coding on Grassmann Manifolds: An Extrinsic Solution.
Mehrtash Tafazzoli HarandiConrad SandersonChunhua ShenBrian C. LovellPublished in: ICCV (2013)
Keyphrases
- dictionary learning
- sparse coding
- sparse representation
- natural images
- unsupervised learning
- group sparsity
- linear combination
- image classification
- sparse codes
- object category recognition
- discriminative power
- generative model
- single image super resolution
- image representation
- high dimensional
- image patches
- visual words
- sparsity constraints
- data sets
- signal processing
- dimensionality reduction
- input image
- small number
- feature space
- feature selection