On the Uniqueness and Stability of Dictionaries for Sparse Representation of Noisy Signals.
Charles J. GarfinkleChristopher J. HillarPublished in: IEEE Trans. Signal Process. (2019)
Keyphrases
- sparse representation
- signal processing
- dictionary learning
- sparse coding
- face recognition
- blind source separation
- sparse approximations
- reconstruction error
- compressed sensing
- image patches
- image classification
- joint optimization
- regularized least squares
- random projections
- image representation
- object tracking
- compressive sensing
- sparse reconstruction
- sparse signal representation
- test images
- high dimensional data
- dimensionality reduction
- negative matrix factorization
- co occurrence
- norm minimization
- sparse codes
- data sets
- piecewise smooth
- image processing
- computer vision
- learned dictionary