UpDic: Update dictionary in GSCAD

In GSCAD: Implementing GSCAD Method for Image Denoising and Inpainting

Description

When the sparce coding A={alpha_1,...,alpha_n} is given, update dictionary by solving problem (6) in https://arxiv.org/abs/1605.07870 using ADMM. #'

Usage

UpDic(Y, alpha, rho = 1, lambda = 0.01, c = 3.7, maxrun_ADMM = 100,
  err_bnd = 1e-04)

UpDicMask(Y, alpha, mask, rho = 1, lambda = 0.01, c = 3.7,
  maxrun_ADMM = 100, err_bnd = 1e-04)

Arguments

Y	The image to be denoised. Inform of matrix.
alpha	Sparse coding.
rho	Parameter for the augmented Lagrangian function.
c, lambda	parameters for GSCAD
maxrun_ADMM	Maximun number of iterations run for ADMM
err_bnd	Stopping criterion for iterations.
mask	0,1 matrix of the same size as Y to indicate the location of corrupted pixels.

Value

The updated sparse dictionary .

Functions

• UpDicMask: Adding mask 0,1 matrix of the same size as Y to indicate the location of corrupted pixel

GSCAD documentation built on Oct. 6, 2017, 5:04 p.m.