Covariance Matrix Estimation for Appearance-based Face Image Processing.
John A. RobinsonPublished in: BMVC (2005)
Keyphrases
- covariance matrix
- image processing
- estimation error
- covariance matrices
- sample size
- principal component analysis
- geometrical interpretation
- eigenvalues and eigenvectors
- gaussian mixture
- positive definite
- objective function
- edge detection
- mahalanobis distance
- eigendecomposition
- feature extraction
- image segmentation
- computer vision
- correlation matrix
- pseudo inverse
- multivariate gaussian
- optimization algorithm
- class conditional densities
- parameter estimation
- multivariate normal
- mahalanobis metric