Equivalence of Reconstruction From the Absolute Value of the Frame Coefficients to a Sparse Representation Problem.
Radu V. BalanPeter G. CasazzaDan EdidinPublished in: IEEE Signal Process. Lett. (2007)
Keyphrases
- sparse representation
- reconstruction error
- learned dictionary
- compressed sensing
- compressive sensing
- sparsity constraints
- sparse coding
- dictionary learning
- face recognition
- sparse coefficients
- sparse reconstruction
- basis vectors
- random projections
- image patches
- image classification
- signal processing
- high dimensional data
- image representation
- negative matrix factorization
- joint optimization
- image reconstruction
- dimensionality reduction
- sparse approximations
- single image super resolution
- regularized least squares
- image super resolution
- reconstructed image
- piecewise smooth
- singular value decomposition
- test images
- linear combination
- image compression
- higher order
- semi supervised
- high resolution
- video sequences