A nonsmooth regularization approach based on shearlets for Poisson noise removal in ROI tomography.
Tatiana A. BubbaFederica PortaGaetano ZanghiratiSilvia BonettiniPublished in: Appl. Math. Comput. (2018)
Keyphrases
- noise removal
- diffusion filtering
- image deconvolution
- image restoration and reconstruction
- region of interest
- anisotropic diffusion
- image enhancement
- denoising
- fourth order
- regularization term
- noise reduction
- image reconstruction
- edge detection
- gaussian noise
- impulsive noise removal
- impulse noise
- markov random field
- total variation
- bilateral filter
- medical images
- diffusion equation
- regularization parameter
- image details
- edge preservation
- salt and pepper noise
- limited angle
- edge preserving
- image segmentation