Discrete Radon transform and its approximate inversion via the EM algorithm.
Yehuda VardiD. LeePublished in: Int. J. Imaging Syst. Technol. (1998)
Keyphrases
- em algorithm
- expectation maximization
- discrete radon transform
- maximum likelihood
- mixture model
- radon transform
- parameter estimation
- generative model
- maximum likelihood estimation
- image reconstruction
- gaussian mixture model
- likelihood function
- expectation maximisation
- incomplete data
- maximum a posteriori
- gaussian mixture
- probability density function
- machine learning
- probabilistic model
- penalized likelihood
- fourier transform
- unsupervised learning
- higher order
- model based clustering
- mixture distribution
- bayesian networks