Non-local means denoising

[Emmanuelle Gouillart]

See the PR on https://github.com/scikit-image/scikit-image/pull/874
(still needs some work, but I'd welcome comments, especially on speed
issues)

Emma

On Sat, Jan 25, 2014 at 12:23:07PM +0100, Emmanuelle Gouillart wrote:
> Hi Juan,

> yes, it's been a long time :-) (I took a new job in September and it's
> been pretty hectic since then!).

> My implementation is indeed 3-D. I'll start working on a PR this week-end
> then! For 3-D images the code is pretty slow due to the large size of the
> data, but I also have a pycuda + cuda implementation written by my PhD
> student William. You'll tell me if you're interested!

> Cheers,
> Emmanuelle

> On Fri, Jan 24, 2014 at 11:46:19AM +1100, Juan Nunez-Iglesias wrote:
> > Haha, hi Emmanuelle, long time no see! ;) I think your interjection in this
> > thread is rather priceless. =D Is your implementation 3D? Either way, if you
> > submit a WIP PR, I might be tempted to use some cycles to help out. =)



> > On Fri, Jan 24, 2014 at 3:26 AM, Emmanuelle Gouillart <
> > emmanuelle.gouillart at nsup.org> wrote:

> >     Hi,

> >     it happens that I have an implementation of NL-means (implemented in C +
> >     cython). I have to clean it a little and then I can send it to the list.
> >     It would actually be interesting to convert it to pure Cython for further
> >     maintanability.

> >     Cheers,
> >     Emmanuelle

> >     On Thu, Jan 23, 2014 at 03:48:41PM +0000, Kevin Keraudren wrote:
> >     > I just listed these implementations as I recently searched for a C++
> >     > implementation.
> >     > Unfortunately, I cannot volunteer to work on this and I do not know
> >     > anyone who already worked on this topic...
> >     > Kind regards,
> >     > Kevin



> >     > Le 23/01/2014 11:55, Stéfan van der Walt a écrit :
> >     > >Hi Kevin

> >     > >On Thu, 23 Jan 2014 09:47:44 +0000, Kevin Keraudren wrote:
> >     > >>Here are some implementations of Non-Local Means Denoising you might
> >     > >>be interested in for reference/comparison:
> >     > >Thanks for these informative links. Â Are you interested in working on
> >     nlmeans,
> >     > >or do you know of someone who would be able to help us review the code
> >     once it
> >     > >is written?

> >     > >Thanks
> >     > >Stéfan