DeNoise or Deconvolution. Which Should Come First?

[dgbarar]

Hi,

Not sure if this question has been asked before.  But which process should happen first on linear images: deconvolution or de-noise? What are everyone's thoughts and why.

I have tried it both ways.  My impression is that I get a smoother (better?) result if I de-noise the linear image with TGVDN prior to deconvolution.

Don Barar

[Carlos Milovic]

Hopefully, the new TGVRestoration process that we are writingmright now will address both problems,at the same time.... Anyway, I think that a mild noise reduction should help the deconvolution.

[jkmorse]

Carlos,

Can you say a little more about the TGVRestoration process you are working on?  Reading between the lines it sounds like it will combine noise reduction AND deconvolution?  If so that would be an amazing tool.  Of course, now that you've got us interested, no one will leave you alone until its published 

Jim 

[Carlos Milovic]

Well, not much to say at the moment... we are still working on the C++ code. Hopefully it will be ready in a few days, or a couple of weeks. I've tested the algorithm in matlab, in the context of reconstruction of magnetic resonance images under heavy undersampling, and it works quite well. We still need to test it with propper astronomical images, and see how it deals with noise. My feeling is that it will generate less ringing, and help reduce noise... but we still need to test it with real raw images.