Reprint of "Two-stage sparse coding of region covariance via Log-Euclidean kernels to detect saliency".
Ying-Ying ZhangCai YangPing ZhangPublished in: Neural Networks (2017)
Keyphrases
- sparse coding
- linear combination
- covariance matrices
- log euclidean
- natural images
- dictionary learning
- feature space
- covariance matrix
- sparse representation
- image classification
- unsupervised learning
- image representation
- generative model
- image patches
- input image
- higher order
- riemannian manifolds
- positive definite
- riemannian metric
- kernel function
- distance measure
- feature vectors
- kernel methods
- multiscale
- maximum likelihood
- affine invariant
- vector space
- visual words
- euclidean space
- signal processing
- high dimensional
- lie group
- pairwise
- support vector