Improved single image super-resolution using sparsity and structured dictionary learning in wavelet domain.
Mahmoud NazzalHüseyin ÖzkaramanliPublished in: SIU (2013)
Keyphrases
- dictionary learning
- wavelet domain
- single image super resolution
- sparse representation
- sparse coding
- wavelet coefficients
- denoising
- wavelet transform
- spatial domain
- multiscale
- multiresolution
- natural images
- image denoising
- human visual system
- image patches
- image classification
- high frequency
- subband
- image representation
- high dimensional data
- compressive sensing
- signal processing
- face recognition
- high dimensional
- super resolution
- low resolution
- dimensionality reduction
- denoising algorithm
- frequency domain
- prior knowledge
- high quality
- feature extraction