Sparse Coding and Dictionary Learning for Symmetric Positive Definite Matrices: A Kernel Approach.
Mehrtash Tafazzoli HarandiConrad SandersonRichard I. HartleyBrian C. LovellPublished in: ECCV (2) (2012)
Keyphrases
- dictionary learning
- symmetric positive definite matrices
- sparse coding
- sparse representation
- feature space
- natural images
- image classification
- unsupervised learning
- linear combination
- generative model
- image representation
- image patches
- sparse codes
- kernel methods
- kernel function
- high dimensional
- visual words
- positive definite
- face recognition
- object recognition