Local Log-Euclidean Covariance Matrix (L2ECM) for Image Representation and Its Applications.
Peihua LiQilong WangPublished in: ECCV (3) (2012)
Keyphrases
- image representation
- log euclidean
- covariance matrix
- covariance matrices
- multiscale
- image classification
- riemannian metric
- object recognition
- sample size
- image features
- principal component analysis
- riemannian manifolds
- image retrieval
- positive definite
- euclidean space
- affine invariant
- feature space
- mahalanobis distance
- sparse coding
- gaussian mixture
- visual words
- vector space
- tensor field
- sparse representation
- objective function
- estimation error
- computer vision