Riemannian Dictionary Learning and Sparse Coding for Positive Definite Matrices.
Anoop CherianSuvrit SraPublished in: IEEE Trans. Neural Networks Learn. Syst. (2017)
Keyphrases
- positive definite matrices
- sparse coding
- dictionary learning
- symmetric positive definite matrices
- sparse representation
- natural images
- image classification
- linear combination
- unsupervised learning
- generative model
- image representation
- feature space
- image patches
- sparse codes
- high dimensional
- signal processing
- pattern recognition
- dimensionality reduction
- visual words
- object recognition
- multiscale
- image processing
- image retrieval
- riemannian manifolds