Local Log-Euclidean Multivariate Gaussian Descriptor and Its Application to Image Classification.
Peihua LiQilong WangHui ZengLei ZhangPublished in: IEEE Trans. Pattern Anal. Mach. Intell. (2017)
Keyphrases
- multivariate gaussian
- covariance matrix
- image classification
- log euclidean
- covariance matrices
- feature extraction
- maximum likelihood estimation
- principal component analysis
- gaussian distribution
- riemannian metric
- image representation
- image features
- affine invariant
- diffusion tensor
- sample size
- action recognition
- tensor field
- bag of words
- vector space
- euclidean space
- keypoints
- image retrieval
- object recognition
- riemannian manifolds
- sparse coding
- shape descriptors
- lie group
- sparse representation
- data points
- visual words
- maximum likelihood
- feature vectors
- objective function
- image processing