A few more sentences on this point:
- Indeed, very few RTK filters currently perform progress reporting
- For pipelines (instead of individual filters), you want to use that
class: https://itk.org/Doxygen/html/classitk_1_1ProgressAccumulator.html.
- Despite its name, "progress.CompletedPixel()" can be called after any
meaningful step, not just the update of a pixel. On iterative filters,
for example,
http://www.cs.cmu.edu/~galeotti/methods_course/ITK_Filters2.pdf suggest
thatProgressReporter can be initialized with the maximum number of
iterations instead of with the total number of pixels to update, and
progress.CompletedPixel() can be called at each iteration. So if you are
reconstructing with an iterative reconstruction filter, you could start
by trying to add a ProgressReporter to that class, and count its
iterations. That's for the modifications to perform in the RTK code, it
is probably just a few lines for the first test.
Now, your question was about the existence of some code to observe the
progress of a filter, assuming that filter does call the
progress.CompletedPixel() adequately. You may want to check this ITK
example:
https://itk.org/Doxygen/html/SphinxExamples_2src_2Core_2Common_2ObserveAnEvent_2Code_8cxx-example.html
I hope it helps,
Cyril
On 09/11/2017 14:29, Simon Rit wrote:
Dear Albert,
We have not implemented anything in this direction so far. But it
would be useful to have it and I know there is a mechanism to do that
in ITK Have you ever used it on your side?
I think the idea is:
- in the reconstruction filter, to create and regularly call a
ProgressReporter
<https://itk.org/Doxygen/html/classitk_1_1ProgressReporter.html>,
- where you want to observe the progress, you add an observer.
There are many examples in ITK. If you want to do it, feel free to
give it a try. If you need help, I'm happy to support your. I have
created an issue <https://github.com/SimonRit/RTK/issues/114> in
github to keep it in mind.
Simon
On Thu, Nov 9, 2017 at 1:27 PM, MURIENNE Albert
<albert.murie...@thalesgroup.com
<mailto:albert.murie...@thalesgroup.com>> wrote:
Cyril, to be more precise : if I run a long time reconstruction, I
want to be available to track progression of the computation (ie 0
to 1 floating index), to have an idea of how fast it is running,
if we are close to the end and so on…
Albert
*De :*Cyril Mory [mailto:cyril.m...@creatis.insa-lyon.fr
<mailto:cyril.m...@creatis.insa-lyon.fr>]
*Envoyé :* jeudi 9 novembre 2017 13:25
*À :* MURIENNE Albert; rtk-users@public.kitware.com
<mailto:rtk-users@public.kitware.com>
*Objet :* Re: [Rtk-users] Reconstruction filter progress observer
Hello,
I am not sure I understand. Are you trying to know, during
runtime, which filter is currently being updated ?
Otherwise, can you reformulate your question (possibly with more
context) ?
Best,
Cyril
On 09/11/2017 13:11, MURIENNE Albert wrote:
Hello,
Is there a simple code example available to illustrate the
registration of an observer to be notified with the
progression of rtk’s reconstruction filters?
Thanks in advance for your help,
Regards
--
Albert Murienne
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