User login
Syndicate
Wavelet sharpen
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 |
Comments
installing on Ubuntu 10.10 64
I absolutely cannot install this.
I would be very grateful if somebody could tell me, step by step, what to do?
Read the Install File that comes with the tar.gz
Once you download the file onto your computer, in terminal, cd to the wavelet-sharpen-0.1.2 folder, type "sudo make", it will run the makefile and return to prompt, then type "sudo make install". It will compile and leave a wavelet sharpen plugin in your src folder. Check the permissions on the file to make sure it's executable then move it to your /home/user/.gimp-2.6/plug-ins folder. You might need to access your drive with administrative rights in order to move the plug-in, which can be accomplished using "gksu nautilus" in terminal. (Just one method).
installation problems
must install
libgimp2.0-dev
package first.
Also note that
sudo make userinstall
will install for all users. Use this instead of
sudo make install
Built & installed
Well, after initial flaws with built I checked requisities and built script, however it didn't appear in the menu. I further looked where wavelet-sharpen is and found out its been installed under /usr/lib/gimp/2.0/plug-ins/ instead of /usr/lib64/... where gimp was looking for plugins for fedora16 x86_64 installation. I had to add correct plugin path and everything is working now. Great sharpening plugin. I'd used NL filter before I got this....
Fedora 13
Attempting to build in Fedora 13, I got the following error:
/usr/bin/ld: wavelet.o: undefined reference to symbol 'exp@@GLIBC_2.2.5'
/usr/bin/ld: note: 'exp@@GLIBC_2.2.5' is defined in DSO /lib64/libm.so.6 so try adding it to the linker command line
/lib64/libm.so.6: could not read symbols: Invalid operation
collect2: ld returned 1 exit status
To build in Fedora 13, you need to edit the makefile in the src folder to explicitly link libm.so.6. Change line 16 to read:
(CC) $(CFLAGS) -o $@ $^ -lm $(LIBS)
The explanation can be found here:
https://fedoraproject.org/wiki/UnderstandingDSOLinkChange
Works fine. Are there any references to the theory behind the code?
OSX
When you use gimp.app from gimp.lisanet.de wavelet sharpen is already part of the package (thank you lisanet! :)
you find in under filter > enhance > wavelet sharpen
Very effective!
This works very nicely, thanks for posting...
[Ubuntu 10.04]
was really an incredible
how to install in Gimp 2.6.6 Ubuntu 9.04 64 bits
Gimp 2.6.6 Ubuntu 9.04 x64
using the plug in
wavelet filter not appearing in menus
The instructions result in the filter wavelet-sharpen appearing somewhere like
/root/.gimp-2.6/plug-ins
but in my installation the plugin did not appear in any of the menus. Further investigation revealed the installation did not have this directory in its plugin path. To add a dir to the plugin path go to Edit/Preferences/plugins and add it. Then restart Gimp.
That's what sunday afternoons are for (?)
Where is it?
Mac user
Works fine.
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:
trojan
mcafee total protection 2010 (the 2010 version not 2009 that comes on the 2010 cd) has detected a GenericExplot!x (trojan) in wavelet-sharpen.exe and today is 6/8/2010.
either
- this is another false positive, or
- you are spreading a trojan on purpose, or
- you have an infected machine.
more than one antivirus is detecting your software as a trojan.
I was really hoping for a good refocuser plugin for gimp to add to my office package. but I can't use it if mcafee is going to remove it as vermin.
This was the Win32 binary
This was the Win32 binary linked in this thread?
http://www.virustotal.com/analisis/4325c0a98b8e95a8d194ee289a4cc4493a8bc...
probably, but that page is bogus - really old virus scanners
that's probably the file, but I noticed that the version of mcafee they were using was 5.x and I am using 14.0.309. big difference. so... just how old are their virus scanners anyway???
and why are you arguing with me about what my mcafee 2010 complained, flagged and removed automatically?
sure it could be a false positive. but with several other people in the same thread complaining of trojans, I am beginning to wonder...
If - then - else
If it is an actual trojan and can be verified to be so...
then we don't want that link leading everyone else to it...
else we're all just assuming and guessing and not moving toward taking the right, necessary actions...
I don't see him as being argumentative, I think he seriously wants to nip this thing in the bud, and getting the right information and clarification only speeds things up.
oops - found out the false positive is because of...
I tried using an up-to-date mcafee on another computer that isn't hosed like mine, and it scanned fine. so mine was a false positive.
it's dawning on me more and more that my programs are getting the hiccups because of an incident with a nasty new printer driver a while ago.
I have kept my system running and updated for 5 years through trials and tribulations and recovering from BSODs (some microsoft-caused) up until that point.
it's finally sinking in that I need to perform that OS Repair NOW because it's affecting my office package builds. ugh!
that means swapping drives out for backup and a whole day taken up in disk writing, etc. 1TB disk. messy.
I've noticed lately that some of my programs like mingw and mediacoder do not execute properly. they do weird things. and mcafee gives a some false positives, removing programs when it shouldn't.
and by the way, the plugin works nicely... :-)
For the records: things like
For the records: things like these are why I argue with someone who is reporting a trojan if 10+ other scanners can't find it :)
On a side note, did you consider that McAfee's reports may be accurate for your system - i.e. that there is indeed a trojan, but it didn't originate from the files you're downloading?
i18n
Acknowledgement
How To Install
Wavelet sharpen install
Is it updated?
Version 0.1.1
Wavelet sharpen install
Virus
Sophos antivirus keeps picking up this add in as containing a virus. I've uploaded this plug-in to "Total Virus", which is a multiple antivirus checker, and it keeps coming up with containing a very hard to get rid of trogan. Test this yourselves to see what I mean.
Jim
Doesn't Virustotal provide a
Doesn't Virustotal provide a link to the scan results? Please add the url here.
Virus Total
Well,
I checked the file again, and the trogan has been removed (thank you for doing this...)
Here is the Virus Total Results:
http://www.virustotal.com/analisis/1cf7ee72bc4cdb721ecc3edf995904f508f2b...
James Chisholm
You're sure that the file has
You're sure that the file has changed rather than the Antivirus vendors finally resolving a false positive?
wavelet help