Image Denoising Based on Fractional Gradient Vector Flow and Overlapping Group Sparsity as Priors.
Ahlad KumarM. Omair AhmadM. N. S. SwamyPublished in: IEEE Trans. Image Process. (2021)
Keyphrases
- image denoising
- structured sparsity
- active contours
- active contour model
- denoising
- natural images
- noisy images
- total variation
- partial differential equations
- sparse coding
- image processing
- diffusion process
- wavelet coefficients
- prior information
- level set
- group lasso
- bayesian framework
- prior knowledge
- edge preserving
- high quality
- shape prior
- level set method
- machine learning
- regularization term
- energy functional
- image segmentation
- convex optimization
- object recognition
- input image
- image patches
- maximum a posteriori
- segmentation method