Tensor Sparse Coding for Positive Definite Matrices.
Ravishankar SivalingamDaniel BoleyVassilios MorellasNikolaos PapanikolopoulosPublished in: IEEE Trans. Pattern Anal. Mach. Intell. (2014)
Keyphrases
- positive definite matrices
- sparse coding
- natural images
- dictionary learning
- image classification
- sparse representation
- linear combination
- higher order
- information theoretic
- high order
- unsupervised learning
- image representation
- generative model
- feature space
- diffusion tensor
- positive definite
- kernel matrix
- visual words
- dimensionality reduction
- high dimensional
- image patches
- low rank
- data sets
- multiscale
- model selection
- object recognition
- kernel function