Penalized-Likelihood PET Image Reconstruction Using 3D Structural Convolutional Sparse Coding.
Nuobei XieKuang GongNing GuoZhiXing QinZhifang WuHuafeng LiuQuanzheng LiPublished in: IEEE Trans. Biomed. Eng. (2022)
Keyphrases
- sparse coding
- image reconstruction
- penalized likelihood
- natural images
- dictionary learning
- maximum likelihood
- sparse representation
- reconstructed image
- linear combination
- image classification
- generative model
- em algorithm
- image reconstruction algorithms
- positron emission tomography
- unsupervised learning
- emission computed tomography
- image representation
- super resolution
- image patches
- maximum a posteriori
- reconstruction method
- visual words
- high dimensional
- random projections
- feature space
- mixture model
- higher order
- image processing
- text classification
- signal processing
- image registration
- high resolution
- multiscale
- similarity measure