Estimating the Laplacian matrix of Gaussian mixtures for signal processing on graphs.
Jordi BeldaLuis VergaraAddisson SalazarGonzalo SafontPublished in: Signal Process. (2018)
Keyphrases
- laplacian matrix
- gaussian mixture
- covariance matrix
- signal processing
- adjacency matrix
- spectral clustering
- covariance matrices
- spectral methods
- image processing
- principal component analysis
- low dimensional
- sample size
- graph laplacian
- closed form
- graph kernels
- graph structure
- pattern recognition
- computer vision
- objective function
- probability density function
- graph partitioning
- em algorithm
- pairwise
- gaussian mixture model
- image segmentation
- mixture model
- expectation maximization
- worst case
- heat kernel
- alpha matte