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Wavelet sharpen
September 29, 2008 - 09:02 — marcor
The wavelet sharpen plugin enhances apparent sharpness of an image by increasing contrast in high frequency space. The amount of unsharpness of the original image can be taken into account by adjusting the sharpening radius. As an option you can choose to sharpen the luminance (YCbCr) channel of the image only.
Features
- Graphical user interface
- Preview image
- Option to sharpen luminance channel only
- Selectable sharpen radius
- Lossless image conversions
Description
The wavelet decomposition of an image results in multiple images with different frequency content. When amplifying the high frequency parts the recomposed image appears to be sharper than the original one. That way the frequency which should be amplified most can also be selected and a given unsharpness in the original image can be taken into account.
This GIMP plugin allows to perform this wavelet decomposition and allows the user to adjust the amount of sharpening and the radius of unsharpness in the original image. As an option you can sharpen the luminance channel of the YCbCr converted image only which reduces colour artifacts to appear (especially in noisy images). The sharpness of the colour contrast is not critical to the human eye.
Example
This picture was taken with the Nikon D80 and the Nikkor AF 50mm 1:1.8 lens fully open. Because the image is slightly out of focus and due to the wide apperture and aliasing the image is not quite sharp.
License
The plugin is distributed under the General Public License (GPL) version 2 and newer.| Attachment | Size |
|---|---|
| wavelet-sharpen-0.1.2.tar.gz | 17.72 KB |
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Comments
was really an incredible
was really an incredible clarity of..
how to install in Gimp 2.6.6 Ubuntu 9.04 64 bits
I tried almost everything, but cant install the plug in. The make and make install commands give lot of errors. Do I need additional files to install and can someone explain me step by step the installation procedure.
Thank you in advance
Gimp 2.6.6 Ubuntu 9.04 x64
No problems here. You have to install libgimp2.0-dev:
http://packages.ubuntu.com/jaunty/libgimp2.0-dev
Install it via
sudo apt-get install libgimp2.0-dev
using the plug in
I have installed the libgimp2.0-dev package and your plugin without error messages in Ubuntu 9.04 32 bit, but can't figure out how to run it. Where are the menu entries for it?
Thank you.
Where is it?
I finally found it.
It's in Filters > Enhance > Wavelet Sharpen
Please consider adding the location in the menu tree to the "Usage" portion of the readme that you supply with the tar.gz
Thank you for your excellent work.
Mac user
Can anybody tell if I can install this great plug-in on my Mac (Leopard)? Thanks!
Works fine.
Sharpen without losses quality.
Very fine effect.
Wavelet sharpen 0.1.2 release
A new version of the wavelet sharpen plug-in has been released! There are no changes in functionality, just translations added.
Changes in 0.1.2:
Changes in 0.1.1:
Changes in 0.1:
i18n
Thanks for both wavelet plug-ins :)
Are you sure you don't want to use the gimp-plug-in template to separate logic from GUI and make UI translatable? :-)
Acknowledgement
1. Very big thanks for this plugin. It is what I have wanted for years: a sharpen which does not emphasize the noise.
2. Big thanks for the install instructions.
3. The plugin works with 2.6.
How To Install
Can anybody show me how to install this (wavelet-sharpen) into GIMP 2.4x under WindowsXP? Can the file somehow be converted to the .scm format whereby it can be easily loaded into GIMP and utilized?
Thanks in advance
Wavelet sharpen install
This is a plugin, not a script, vey52.
You must compile it with Msys/MinGW. The command is:
gimptool-2.0 --install-admin wavelet-sharpen.c if you want to have it installed in your gimp plugin directory, or gimptool-2.0 --build wavelet-sharpen.c, if you only want to get the binary.
Here is a link to download the compiled Win32 exe I have just built:
http://pagesperso-orange.fr/fcollard/Zip/wavelet-sharpen_win32.zip
Hope this works. I'll put it in a more regular repository later.
You just have to copy the file wavelet-sharpen.exe into one of these directories:
C:\Program Files\GIMP-2.0\Gimp-2.0\lib\gimp\2.0\plug-ins\
or
c:\Documents and Settings\username\.gimp-2.6\plug-ins\
François Collard.
Is it updated?
Hi, I have absolutely no idea what is it to "compile", and I wonder if this "compiled" version has been updated to the last one? If not, how can I "compile"? Do I need a software? Thank you!
Version 0.1.1
Compiling the new version is a bit harder. I'll upload a new Win32 binary shortly.
Wavelet sharpen install
I may upload very soon
Before i will like some more info the developer talk about 1 plugin then on the messages are references to 2 plugins
wawelet denoise and wawelet sharpen.
So is 1 plugin with 2 possible functions
or are 2 similar but separate plugin ?
(if the last maybe will be more convenient merge in a single GUI with 2 Tabs )
wavelet help
I want to decompose an image with a certain wavelet function but then recompose it with a slightly different function. How to do this?