The wavelet denoise plugin is a tool to reduce noise in each channel of an image separately. The default colour space to do denoising is YCbCr which has the advantage that chroma noise can be reduced without affecting image details. Denoising in CIELAB (L*a*b*) or RGB is available as an option. The user interface allows colour mode and preview channel selection. The denoising threshold can be set for each colour channel independently.
The wavelet denoise plugin for The GIMP reduces noise in an image using the algorithm copied and altered from the UFRaw program [Udi Fuchs] (which inherited the algorithm from dcraw [Dave Coffin]). Instead of denoising all RGB channels at once, the plugin implementation allows to denoise the RGB channels in dividually and - even more useful - to denoise the YCbCr or CIELAB channels individually. The colour model conversions are nearly lossless as the internal calculations are done in floating point numbers and rounding errors are avoided. Because the algorithm implements a wavelet filtering it runs quite fast.
This is part of a picture taken with the Nikon D80 DSLR camera at ISO 1600 in
RAW format. The face is lit by two candles and a colour temperature setting of
2500 K was used. The file was opened with the UFRaw plugin.

The goal is not to reduce all noise. The unpleasant part is the chroma noise
which appears only when shooting the camera in RAW mode at a high ISO speed. As
you can see the colour (chroma) noise is almost completely gone in the second picture and the luminance noise is slightly reduced. If you look closely at the face you will notice that the image details have not been altered much, the sharpness is almost the same.
Note that this is just the result of a uniform application of the filter on the unprocessed image. Masking the filter effect with a selection is possible which could improve the result even more.
The most significant changes are the introduction of noise profiling and internationalization.
There are several changes that have been made to improve the plugin.
Apart from that minor other changes have been made.
The plugin is distributed under the General Public License (GPL).
| Attachment | Size |
|---|---|
| wavelet-denoise-0.2-win.zip | 134.91 KB |
| wavelet-denoise-0.3.1.tar.gz | 26.65 KB |
Comments
great plugin but
This is fantastic, thank you for sharing your work. It would be helpful (for a great many judging by the google searches I did) if your install file included details of the packages needed to install this plugin. On Fedora 12 I had to add the 'gettext' package and 'plugin development tools'. After that works as well, if not better than any other de-noiser I have used.
What to download?
download gimp plugin
Really Great
Wavelet denoise on Macports?
Wavelet denoise 0.3.1 release
Noise pattern
Noise pattern from image
Wavelet Denoise for Mac Leopard
make -C po msgfmt -c -v -o de.mo de.po 36 übersetzte Meldungen. msgfmt -c -v -o ru.mo ru.po 36 übersetzte Meldungen. msgfmt -c -v -o it.mo it.po 36 übersetzte Meldungen. msgfmt -c -v -o et.mo et.po 36 übersetzte Meldungen. msgfmt -c -v -o pl.mo pl.po 36 übersetzte Meldungen. make -C src make[1]: gimptool-2.0: Command not found cc -O3 -Wall -c -o plugin.o plugin.c In file included from plugin.c:16: plugin.h:21:26: error: libgimp/gimp.h: No such file or directory plugin.h:22:28: error: libgimp/gimpui.h: No such file or directory plugin.h:23:21: error: libintl.h: No such file or directory In file included from plugin.c:16: plugin.h:46: warning: type defaults to ‘int’ in declaration of ‘gchar’ plugin.h:46: error: syntax error before ‘*’ toke ...... plugin.c:40: error: syntax error before ‘{’ token make[1]: *** [plugin.o] Error 1 make: *** [src] Error 2i think the problem is, there ist no gimptool-2.0 on my mac. therefore i can´t compile the plugin. has anyone a solution? i don´t know how to install this plugin on my mac.Sorry
Thank you!
sudo apt-get install libgimp2.0-devThis plug-in is licensed
This plug-in is licensed under GPLv2 and does not have the "or any later version" clause. This causes problems once GIMP switches to GPLv3+ and LGPLv3+.
The same applies to the code that has been taken from UFRaw. The UFRaw author has already been made aware of this problem, you should update the copied code as soon as the license there is changed, too.
Perfect to reduce high ASA CCD Noise
Really Amazing - Version 0.3 for windows?
Wavelet denoise 0.3 beta released!
I hope that the
Not working in 2.4.2
Re: Not working in 2.4.2
Wavelet denoise update
Use in script-fu
wavelet-denoise: Use in script-fu
I will start by explaining
Batch mode
Wavelet denoise error under GIMP 2.4.0 WinXP fixed with 2.4.6
Plug in caues error in Gimp
I am running windows XP home.
A search on Google suggested the problem may be due to multiple copies of libgtk-win32-2.0-0.dll. A search found copies of libgtk-win32-2.0-0.dll in the following directories: C:\Program Files\Common Files\GTK\2.0\bin (2.10.6.0) and, C:\Program Files\GIMP-2.0\bin (2.10.14.0).
I sent the entire C:\Program Files\GIMP-2.0 directory to the recycle bin and restarted windows. However I still get the error.
Wavelet denoise 0.2: Windows binary released
Incomplete install instructions
Re: Incomplete install instructions
Wavelet denoise v0.2 released!
Finally the new version of wavelet denoise has been released!
There is one or two important difference between the final release and the beta version: the plugin now operates on linear image data (as opposed to gamma corrected data) and the processing speed has been increased.
Here's the complete list of changes from version 0.1.1:
Enjoy!
Wavelet denoise v0.2 released!
sharpening vs noise reduction
I had build the windows
wawelet denoise
Wavelet denoise: 0.2-beta released
The beta version of the plugin wavelet denoise 0.2 has been released. There are many changes - suggestions are welcome.
Changes:
Any chance of adding this to ufraw?
Any chance of adding this to ufraw?
You surely know that there is denoising in UFRaw. That's where I took the algorithm for this denoising plugin from. In UFRaw the denoising is done on linear data before bayer interpolation and therefore colour model conversions cannot be made. It could be done after the interpolation though.
However, I share the belief that software is not perfect when there is nothing left to add but when there is nothing left to leave away. I talked to the author of UFRaw and I think he will not change it. (I did not request it, you know.) Note that there is no 100% magnification of the preview image available in UFRaw at the moment and that would be necessary for decent denoising.
What's wrong with using a plugin for the job? Let's not make UFRaw complicated!
Re: Any chance of adding this to ufraw?
Install error's
gimptool-2.0 --install-admin wavelet-denoise.c. Notice that the file's name is wavelet-denoise.c not wavelet_denoise.cwawelet denoise : Any hope for windows binary ?
windows binary
Re: wavelet denoise windows binary
Thank you, JamesH, for providing this! I could not test it however as I have no Windows system with GIMP available. I will add it to the file list when somebody has checked it and if the license, install, readme files are included in the archive.
There will soon be another release with new features and I hope you will repeat this trick.
Re:Wavelet denoise windows binary and 0.2-beta released
Re: wavelet denoise : Any hope for windows binary ?
Wavelet denoise 0.3.1 Windows binary
wavelet denoise
uh..installing in windows