Image denoising based on improved data-driven sparse representation.
Dai-Qiang ChenPublished in: CoRR (2015)
Keyphrases
- image denoising
- sparse representation
- denoising
- natural images
- sparse coding
- dictionary learning
- noisy images
- total variation
- partial differential equations
- image classification
- wavelet domain
- image processing
- face recognition
- signal processing
- image patches
- compressive sensing
- image representation
- wavelet coefficients
- high dimensional data
- denoising methods
- machine learning
- test images
- linear combination
- image reconstruction
- frequency domain
- higher order
- object recognition
- multiscale
- noise level
- anisotropic diffusion
- high quality
- computer vision
- data sets
- norm minimization
- sparse coefficients