Keyphrases
- sparse representation
- multiple sources
- sensor array
- covariance matrices
- covariance matrix
- dictionary learning
- vector space
- maximum likelihood
- sparse coding
- image classification
- gaussian mixture model
- line fitting
- face recognition
- gaussian distribution
- signal processing
- data sources
- object tracking
- high dimensional data
- distance measure
- image patches
- image representation
- dimensionality reduction
- test images
- gaussian mixture
- feature vectors
- mixture model
- linear classifiers
- principal component analysis
- support vector machine
- data analysis