Sparse Coding for Improved Signal-to-Noise Ratio in MRI.
Fuleah A. RazzaqShady M. K. MohamedAsim BhattiSaeid NahavandiPublished in: ICONIP (3) (2014)
Keyphrases
- signal to noise ratio
- sparse coding
- dictionary learning
- sparse representation
- natural images
- noise reduction
- image classification
- linear combination
- unsupervised learning
- generative model
- image representation
- contrast to noise ratio
- shift invariant
- sparse codes
- medical images
- magnetic resonance imaging
- feature space
- high resolution
- edge detection
- data sets
- visual words
- image data
- mr images
- image patches
- gaussian noise
- image processing
- maximum likelihood
- high quality
- magnetic resonance images
- high dimensional
- probabilistic model
- image reconstruction
- higher order