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Closed-Form Approximation of the Total Variation Proximal Operator
Edward P. Chandler
, Shirin Shoushtari
, Brendt Wohlberg
, Ulugbek S. Kamilov
Department of Electrical & Systems Engineering
Department of Computer Science & Engineering
Institute of Clinical and Translational Sciences (ICTS)
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Keyphrases
Total Variation
100%
Proximal Operator
100%
Closed-form Approximation
100%
Computed Tomography Images
16%
Image Reconstruction
16%
Optimization Problem
16%
Image Denoising
16%
Piecewise Constant
16%
Scale Parameter
16%
Gradient Descent
16%
Closed-form Expression
16%
Imaging Inverse Problems
16%
Variation Function
16%
Convex Function
16%
Proximal Methods
16%
Sparse-view Computed Tomography
16%
Regularized Optimization
16%
Mathematics
Total Variation
100%
Closed Form
100%
Underlying Structure
16%
Convex Function
16%
Variation Function
16%