Image denoising via sparse representation using rotational dictionary.
Yibin TangNing XuAimin JiangChangping ZhuPublished in: J. Electronic Imaging (2014)
Keyphrases
- sparse representation
- image denoising
- denoising
- natural images
- dictionary learning
- total variation
- sparse coding
- noisy images
- image processing
- image classification
- joint optimization
- face recognition
- signal processing
- compressive sensing
- wavelet coefficients
- image patches
- wavelet domain
- random projections
- dimensionality reduction
- high dimensional data
- test images
- object recognition
- multiscale
- piecewise smooth
- higher order
- signal to noise ratio
- pattern recognition
- high resolution
- feature extraction
- nearest neighbor