tv_denoising

Port of TVL1denoise - TV-L1 image denoising with the primal-dual algorithm.

Implementation of MATLAB script found at [1] which includes the following copyright notice:

Copyright (c) 2016 Manolis Lourakis (lourakis at ics forth gr) Institute of Computer Science, Foundation for Research & Technology - Hellas Heraklion, Crete, Greece. http://www.ics.forth.gr/

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

The Software is provided “as is”, without warranty of any kind.

References

[1]https://www.mathworks.com/matlabcentral/fileexchange/57604-tv-l1-image-denoising-algorithm
mr_utils.recon.tv_denoising.tv_denoising.tv_l1_denoise(im, lam, disp=False, niter=100)[source]

TV-L1 image denoising with the primal-dual algorithm.

Parameters:
  • im (array_like) – image to be processed
  • lam (float) – regularization parameter controlling the amount of denoising; smaller values imply more aggressive denoising which tends to produce more smoothed results
  • disp (bool, optional) – print energy being minimized each iteration
  • niter (int, optional) – number of iterations
Returns:

newim – l1 denoised image.
Return type:

array_like
Raises:

AssertionError – When dimension of im is not 2.