A High-Resolution Technique for Ultrasound Harmonic Imaging Using Sparse Representation in Gabor Frames.
Oleg V. MichailovichDan AdamPublished in: IEEE Trans. Medical Imaging (2002)
Keyphrases
- sparse representation
- high resolution
- face recognition
- image representation
- low resolution
- dictionary learning
- sparse coding
- ultrasound images
- super resolution
- image classification
- image patches
- single image super resolution
- image processing
- sparse reconstruction
- compressed sensing
- compressive sensing
- negative matrix factorization
- joint optimization
- random projections
- image super resolution
- high quality
- ultrasound imaging
- high dimensional data
- sparse approximations
- feature extraction
- magnetic resonance images
- dimensionality reduction
- moving objects
- regularized least squares
- face images
- high resolution images
- signal processing
- gabor features
- gabor filters
- test images
- imaging systems
- computer vision
- low resolution images
- norm minimization
- depth map
- data sets
- input image
- feature space
- object recognition
- multiscale
- decision trees
- neural network