Penalized-likelihood PET Image Reconstruction Using 3D Structural Convolutional Sparse Coding.
Nuobei XieKuang GongNing GuoZhiXin QinZhifang WuHuafeng LiuQuanzheng LiPublished in: CoRR (2019)
Keyphrases
- sparse coding
- image reconstruction
- penalized likelihood
- sparse representation
- dictionary learning
- natural images
- em algorithm
- image reconstruction algorithms
- reconstructed image
- maximum likelihood
- generative model
- image classification
- linear combination
- positron emission tomography
- unsupervised learning
- super resolution
- image patches
- image representation
- emission computed tomography
- maximum a posteriori
- feature space
- mixture model
- reconstruction method
- high dimensional
- visual words
- compressive sensing
- expectation maximization
- supervised learning
- random projections
- object recognition
- bag of words
- machine learning
- image registration
- high resolution
- pattern recognition
- feature extraction
- image sequences