Optimal overcomplete kernel design for sparse representations via discrete fractional Fourier transforms.
Zhijing YangChunmei QingBingo Wing-Kuen LingWai Lok WooSaeid SaneiPublished in: CSNDSP (2012)
Keyphrases
- sparse representation
- fourier transform
- signal processing
- joint optimization
- regularized least squares
- dictionary learning
- sparse coding
- image classification
- compressive sensing
- frequency domain
- dimensionality reduction
- dynamic programming
- discrete fourier transform
- object recognition
- kernel methods
- high dimensional data
- kernel function
- high resolution
- feature space