Image denoising based on sparse representation and gradient histogram.
Mingli ZhangChristian DesrosiersPublished in: IET Image Process. (2017)
Keyphrases
- image denoising
- sparse representation
- denoising
- dictionary learning
- natural images
- sparse coding
- noisy images
- total variation
- image processing
- face recognition
- partial differential equations
- compressive sensing
- gray level
- wavelet coefficients
- image classification
- signal processing
- image patches
- edge detection
- wavelet domain
- piecewise smooth
- image representation
- norm minimization
- image prior
- mean shift
- test images
- multiscale
- higher order
- noise model
- pattern recognition
- regularization term
- multiresolution
- dimensionality reduction
- data sets
- high dimensional data