Log-Euclidean Kernels for Sparse Representation and Dictionary Learning.
Peihua LiQilong WangWangmeng ZuoLei ZhangPublished in: ICCV (2013)
Keyphrases
- dictionary learning
- sparse representation
- log euclidean
- riemannian manifolds
- sparse coding
- euclidean space
- covariance matrices
- diffusion tensor
- tensor field
- riemannian metric
- manifold learning
- face recognition
- vector space
- covariance matrix
- positive definite
- image patches
- image classification
- high dimensional data
- reproducing kernel hilbert space
- sparse codes
- signal processing
- dimensionality reduction
- feature space
- geometric structure
- kernel methods
- kernel function
- pattern recognition
- linear combination
- image representation
- low dimensional
- machine learning