I suggest adding an unobtrusive notice to indicate this in-app to avoid confusion, pointing to the docs.
I think it needs to be fixed. If denoise is active then levels 7 and above simply do not work at all. I am not sure a simple not in the on-line documentation will suffice. Is it possible to put something in the wavelet levels selector or else somehow to toggle the sliders for levels 7 and above if denoise is selected?
I would be disappointed to lose the frequency based denoise if I want to keep the shape enhancing abilities of the higher levels.
Should I file a bug report to formalize this discussion?
2 Likes
Yes, please!
There is a further problem. If I have selected 9 levels and denoise then the residual image adjustments work only on the residual after the 10th level even though contrast adjustments work only on levels 1-6. If I have selected 6 levels then the residual image adjustments work on the residual after the 6th level.
I change the GUI (see issue above), to disable Denoise in some cases
jacques
Hi @jdc,
with developement version 5.8-2530-g5fd640f97 Commit: 5fd640f97 if I open a detail window at last an more 800% and move the detail on the image with Wavelets and Denoise and refine enabled I have strange colored halos in te datail windows and 98% of the times after RT crashes into Segmentation fault.
When you have time…could you investigate , thanks 
I tried with various files…nothings happens…
Can you provided a raw and pp3
Thank you
Jacques
I think I have found the bug…In some cases, when windows is too small, with denoise enable I think wavelet works bad
I try another time, and I will push a commit
I tried with dev into the git and it behaves the same…
OK… what I do:
I,
- open this _DSC7811.NEF (25.1 MB) image
- set the neutral profile
- open a detail window
- zoom it to 800
- enable wavelet module
- enable Denoise and refine submodule
- slide refine up ( 43)
- move the detail window on the image
- RT crashes
No Desmis,
now RT crashes when detail window goes beyond 500% and wavelet and refine is enabled and I move the refine slider
1 Like
Ciao @dafrasaga, Salut @jdc ,
Manjaro/KDE RT Version: 5.8-2535-g051145850
still crashes when one follows Gabriele’s steps.
Have fun!
Claes in Lund, Sweden
1 Like
I will look tomorrow 
jacques
1 Like
Hello
Excuse my bad english.
I push a change 8e9e397 in branch “waveletcrash”
I think (I hope) the crash is solved…
But an explanation.
To work wavelet needs a minimum space to realize the decomposition, for each channel L*, a*, b*
The minimum size (in the preview window in pixels) for each level
- level 10 = 1024x1024
- level 9 = 512x512
- level 8 = 256x256
- level 7 = 128x128
- level 6 = 64x64
In this case (related crash) we are at level 6… I have added this level…
But beware, if you have settings wavelet to level 7 or above, now the system will not crash (I hope), but process for this level will be ignored.
As a result, either your setup (like mine with a separate screen, and no left panel and you can examine up to level 10) allows it, or you have to limit the zoom. Usually up to 300% or 400% you shouldn’t have any problems viewing level 7
jacques
Hi @jdc,
I compiled the waveletcrash branch but it crashes again 
What I do:
- Open the image
- set the neutral profile
- open a detail window
- zoom in at 500%
- enable wavelet and sub-refine
- move the refine slider
- it crashes
Very difficult for me to find…because with your settings…no crash.
But I have crash in other case…and I think I solved it, and probably it will solve your case
commit 344735bb8
Jacques
