Fisher Vector Coding for Covariance Matrix Descriptors Based on the Log-Euclidean and Affine Invariant Riemannian Metrics.
Ioana IleaLionel BombrunSalem SaidYannick BerthoumieuPublished in: J. Imaging (2018)
Keyphrases
- log euclidean
- affine invariant
- covariance matrix
- covariance matrices
- vector space
- feature vectors
- affine transformation
- riemannian metric
- multiscale
- convex hull
- tensor field
- shape descriptors
- sample size
- keypoints
- riemannian framework
- riemannian manifolds
- diffusion tensor
- euclidean space
- gaussian mixture model
- distance measure
- image sequences
- image processing