A Frame Construction and a Universal Distortion Bound for Sparse Representations.
Mehmet AkçakayaVahid TarokhPublished in: IEEE Trans. Signal Process. (2008)
Keyphrases
- sparse representation
- dictionary learning
- reconstruction error
- sparse coding
- compressive sensing
- image classification
- signal processing
- regularized least squares
- joint optimization
- compressed sensing
- face recognition
- dimensionality reduction
- image patches
- test images
- negative matrix factorization
- random projections
- high dimensional data
- sparse reconstruction
- sparse coefficients
- image representation
- manifold learning
- high dimensional
- feature space
- computer vision
- machine learning
- neural network