Sparse Coding and Dictionary Learning for Symmetric Positive Definite Matrices: A Kernel Approach
Mehrtash Tafazzoli HarandiConrad SandersonRichard I. HartleyBrian C. LovellPublished in: CoRR (2013)
Keyphrases
- dictionary learning
- symmetric positive definite matrices
- sparse coding
- sparse representation
- feature space
- natural images
- image classification
- linear combination
- unsupervised learning
- kernel function
- generative model
- image representation
- kernel methods
- sparse codes
- visual words
- image patches
- data sets
- higher order
- high dimensional
- reproducing kernel hilbert space
- face recognition
- mixture model
- model selection
- input data
- kernel matrix