| Summary: | Option to apply unsharp masking to luma channel only [patch] | ||
|---|---|---|---|
| Product: | [Applications] digikam | Reporter: | Dik Takken <kde> |
| Component: | Plugin-Editor-Sharpen | Assignee: | Digikam Developers <digikam-bugs-null> |
| Status: | RESOLVED FIXED | ||
| Severity: | wishlist | CC: | caulier.gilles, shaza.ismail.k |
| Priority: | NOR | ||
| Version: | 0.7.3 | ||
| Target Milestone: | --- | ||
| Platform: | Gentoo Packages | ||
| OS: | Linux | ||
| Latest Commit: | https://commits.kde.org/digikam/78534f6f50a53f188366d9fc218243461a1787cc | Version Fixed In: | 5.5.0 |
| Attachments: | Adding a checkbox that makes the unsharp mask filter get applied on luminosity channel only. | ||
|
Description
Dik Takken
2005-11-06 00:38:15 UTC
Try to use Refocus plugin instead UnsharpMask available in 0.8.0 release. Take a look in plugin handbook for more informations : http://docs.kde.org/development/en/extragear-graphics/digikamimageplugins/refocus.html Gilles Caulier Dik, close this one? That's something totally different: Refocus is a convolution filter. Unsharp mask is a simple sharpening filter which works by enhancing edge contrast. It's the sharpening filter of choice for "everyday" images. But it's quality can even improved by only applying it to the luma channel. There are many gimp/photoshop/... howtos about this. This can be done with scrips, but digikam does not support scripts. So it would be very convient to include this option into the unsharp mask filter. I agree that refocus is something totally different than unsharp masking is. In general, you can't substitute one for the other. Created attachment 104016 [details]
Adding a checkbox that makes the unsharp mask filter get applied on luminosity channel only.
Git commit 78534f6f50a53f188366d9fc218243461a1787cc by Gilles Caulier. Committed on 13/02/2017 at 17:22. Pushed by cgilles into branch 'master'. apply patch #104016 from Shaza Ismail to reduce color noise with Unsharp Mask filter using HSL color space while processing image FIXED-IN: 5.5.0 M +3 -1 NEWS M +56 -32 libs/dimg/filters/sharp/sharpsettings.cpp M +7 -5 libs/dimg/filters/sharp/sharpsettings.h M +78 -49 libs/dimg/filters/sharp/unsharpmaskfilter.cpp M +4 -3 libs/dimg/filters/sharp/unsharpmaskfilter.h M +12 -4 utilities/imageeditor/tools/enhance/sharpentool.cpp M +2 -2 utilities/imageeditor/tools/enhance/sharpentool.h M +6 -2 utilities/queuemanager/tools/enhance/sharpen.cpp M +2 -2 utilities/queuemanager/tools/enhance/sharpen.h https://commits.kde.org/digikam/78534f6f50a53f188366d9fc218243461a1787cc |