Group sparsity based sparse coding for region covariances.
Hasan Tugrul ErdoganErkut ErdemAykut ErdemPublished in: SIU (2013)
Keyphrases
- group sparsity
- sparse coding
- dictionary learning
- natural images
- image classification
- sparse representation
- linear combination
- unsupervised learning
- generative model
- discriminative power
- structured sparsity
- high dimensional
- image patches
- input image
- image representation
- visual words
- feature space
- higher order
- machine learning
- image regions
- nearest neighbor
- compressive sensing