Bug 166820

Summary:	Wish: Specify a ISO over which to apply noise reduction
Product:	[Applications] digikam	Reporter:	Tommaso Schiavinotto <mynos_main>
Component:	Plugin-Editor-NoiseReduction	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED FIXED
Severity:	wishlist	CC:	caulier.gilles, fredericg_99, lexa
Priority:	NOR
Version:	0.9.3
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:	3.2.0

Description Tommaso Schiavinotto 2008-07-17 11:55:06 UTC

Version:           9.3 (using KDE 3.5.9)
Installed from:    Ubuntu Packages
OS:                Linux

I usually don't want to apply noise reduction during the raw conversion. But sometimes when I take a picture with high ISO then I would like to do that...

Changing the option of applying noise reduction everytime I edit an image is quite unconvinient. I think most of the problems would be solved by offering an option in
the raw importer preferences asking for the minimal ISO for which noise reduction should be applied.

(the best thing would be to associate a threshold to every ISO, but I think this would complicate the GUI too much for the user).

Comment 1 caulier.gilles 2011-12-15 13:13:28 UTC

Tommaso,

Ideally, The noise must be analysed from image automatically. For ex, last Sony DLSR application under Windows provide this option by default and work very well. User can disable it and adjust manually NR reduction settings.

The question is : how to implement it ?

Alex, if you know any code about...

Gilles Caulier

Comment 2 Frederic Grelot 2011-12-15 13:54:19 UTC

If NR were to be applied depending on picture info (EXIF), it should take into account the pair "Camera+ISO Level", not just ISO level.
Of course, it would be even better to have a noise level detection.

Anyway, whatever the solution, this would be an excellent feature, and I definitely vote for it!

Comment 3 caulier.gilles 2013-04-16 12:41:32 UTC

Noise Estimate tool is now available in in Editor and BQM, and can be used through NR tool to automatically adjust settings of YCrCb wavelets configuration.

Gilles Caulier