Total variation with overlapping group sparsity for speckle noise reduction.
Jun LiuTing-Zhu HuangGang LiuSi WangXiao-Guang LvPublished in: Neurocomputing (2016)
Keyphrases
- noise reduction
- total variation
- structured sparsity
- regularization methods
- edge preserving
- image restoration
- multiplicative noise
- denoising
- speckle noise
- image denoising
- convex optimization
- signal to noise ratio
- convex optimization problems
- edge detection
- median filter
- noise level
- image deblurring
- image processing
- regularization term
- soft thresholding
- low rank
- sparse coding
- natural images
- impulse noise
- bilateral filter
- nonlinear diffusion
- noisy images
- higher order
- feature vectors