An Accelerated Smoothing Gradient Method for Nonconvex Nonsmooth Minimization in Image Processing.
Weina WangYunmei ChenPublished in: J. Sci. Comput. (2022)
Keyphrases
- gradient method
- image restoration and reconstruction
- image processing
- convex functions
- markov random field
- data fidelity term
- total variation
- convergence rate
- objective function
- regularization term
- image restoration
- step size
- signal processing
- optimization methods
- convex formulation
- negative matrix factorization
- computer vision
- image segmentation
- pattern recognition
- multiscale
- globally convergent
- machine learning
- natural gradient learning
- convex optimization
- image denoising
- image compression
- feature extraction
- global optimization
- optimization method
- convergence speed
- cost function
- convex sets
- alternating direction method of multipliers