Keyphrases
- denoising
- sparse and redundant representations
- image denoising
- natural images
- sparse representation
- dictionary learning
- sparse coding
- noisy images
- image processing
- total variation
- wavelet domain
- denoising algorithm
- small image patches
- image patches
- frequency domain
- gaussian noise
- wavelet packet
- denoising methods
- signal and image processing
- joint optimization
- image prior
- sparse codes
- wavelet coefficients
- multiscale
- image deblurring
- high quality