Orthogonal orthogonal overcomplete kernel design for sparse representation.
Zhijing YangChunmei QingBingo Wing-Kuen LingWai Lok WooSaeid SaneiPublished in: CSNDSP (2012)
Keyphrases
- sparse representation
- dictionary learning
- sparse coding
- regularized least squares
- face recognition
- joint optimization
- image classification
- compressed sensing
- compressive sensing
- test images
- signal processing
- dimensionality reduction
- image patches
- negative matrix factorization
- random projections
- natural images
- image representation
- high dimensional data
- reconstruction error
- piecewise smooth
- image processing
- pattern recognition
- probabilistic model
- kernel function