[Bug 497620] Re: Linear Histogram is always empty
Launchpad has imported 18 comments from the remote bug at https://bugs.kde.org/show_bug.cgi?id=163286. If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. On 2008-06-05T18:28:18+00:00 dhjt wrote: Version: 0.9.4-beta4 (using KDE 3.5.8) OS:Linux I get the impression that the histogram preview is calculated from a downscaled version of the image. The result is that the histogram preview is not very accurate. When working with large images, this causes problems. The original image may contain many small highlights that completely disappear when the image is scaled down. So, in the Adjust Curves preview window, these highlights go unnoticed. When adjusting the curve, you can easily clip the high lights without noticing it. Only after applying the final Adjust Curves settings, the full histogram is re-calculated. Often, it turns out that the histogram has been clipped, while the preview looked just fine. IMHO an accurate preview of the resulting histogram is critical to a Adjust Curves tool. Maybe the plugin should have an option to create a preview based on the full image in stead of a scaled down version. I can imagine adding a 'fast preview' checkbox that is checked by default. The Adjust Levels tool will probably have the same problem, but I did not check. Reply at: https://bugs.launchpad.net/digikam/+bug/497620/comments/0 On 2009-12-28T20:15:34+00:00 Kde-20-micorreo wrote: In my case, I don't know if the problem is related to my installation, linear histogram rarely display anything, I've to work all the time using logarithm histogram Later Manuel Reply at: https://bugs.launchpad.net/digikam/+bug/497620/comments/3 On 2009-12-28T20:51:12+00:00 Caulier-gilles-9 wrote: This problem have been fixed with 1.0.0. Check this version. Gilles Caulier Reply at: https://bugs.launchpad.net/digikam/+bug/497620/comments/4 On 2010-02-08T21:57:08+00:00 Caulier-gilles-9 wrote: Dik, With 1.2.0, I plan to change all Colors Correction tools in editor to : - Use zommable preview widget. - Use mutithreading everywhere with this tools (not yet done since a long time) - Compute histogram on visible preview. If you zoom to fit image on scrren, you will compute histogram on whole image. I started with BCG tool. Code is in svn now. I would to know your feedback here before to continue. Relevant tools to do are : - HSL - Color Balance - Chanels mixer - BW - Auto corrections - Levels - Curves - White Balance Gilles Caulier Reply at: https://bugs.launchpad.net/digikam/+bug/497620/comments/8 On 2010-02-08T21:59:04+00:00 Caulier-gilles-9 wrote: SVN commit 1087337 by cgilles: port BCG tool to use zoomable preview, multithreading, and histogram computation based on visible preview region. CCBUGS: 163286 M +16 -29bcgtool.cpp WebSVN link: http://websvn.kde.org/?view=revrevision=1087337 Reply at: https://bugs.launchpad.net/digikam/+bug/497620/comments/9 On 2010-02-09T21:45:36+00:00 dhjt wrote: Gilles, This sounds really good. Does this mean that it is possible to preview the histogram of a small detail as well? That would enable us to check if small details become overexposed for example. I might get to try a SVN checkout this weekend. Reply at: https://bugs.launchpad.net/digikam/+bug/497620/comments/10 On 2010-02-09T23:10:28+00:00 Caulier-gilles-9 wrote: Does this mean that it is possible to preview the histogram of a small detail as well? Yes absolutly. The histogram is computed with visible preview area, set by preview mode buttons from right side of status bar. If you zoom indeep the image, you will compute histogram from this part. Gilles Caulier Reply at: https://bugs.launchpad.net/digikam/+bug/497620/comments/11 On 2010-02-10T19:38:20+00:00 tschenser wrote: I can not check this as histogram in BCG is not working for me at the moment. But does this mean that histogram is _always_ computated on visible preview area? I mean this is a feature, but we do also not update image dimension display on visible preview area. Even in zoom it should be possible to have a full image histogram and for my understandings this should be standard. Or do I understand something wrong? Jens Reply at:
[Bug 497620] Re: Linear Histogram is always empty
** Changed in: digikam Importance: Unknown = Wishlist -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to digikam in ubuntu. https://bugs.launchpad.net/bugs/497620 Title: Linear Histogram is always empty -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
[Bug 497620] Re: Linear Histogram is always empty
** Changed in: digikam Status: Confirmed = Fix Released -- Linear Histogram is always empty https://bugs.launchpad.net/bugs/497620 You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to digikam in ubuntu. -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
[Bug 497620] Re: Linear Histogram is always empty
** Changed in: digikam Status: Unknown = Confirmed -- Linear Histogram is always empty https://bugs.launchpad.net/bugs/497620 You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to digikam in ubuntu. -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
[Bug 497620] Re: Linear Histogram is always empty
Thanks for testing and confirming it is fixed. ** Changed in: digikam (Ubuntu) Status: Incomplete = Fix Released -- Linear Histogram is always empty https://bugs.launchpad.net/bugs/497620 You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to digikam in ubuntu. -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
[Bug 497620] Re: Linear Histogram is always empty
I cannot reproduce this problem with 1.0/final. Digikam 1.0/final is now available for Karmic users in karmic-backports repository. Can you enable backports repository and confirm that you still have this problem? ** Changed in: digikam (Ubuntu) Status: New = Incomplete -- Linear Histogram is always empty https://bugs.launchpad.net/bugs/497620 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 497620] Re: Linear Histogram is always empty
2010/1/3 Luka Renko - : I cannot reproduce this problem with 1.0/final. Digikam 1.0/final is now available for Karmic users in karmic-backports repository. Can you enable backports repository and confirm that you still have this problem? ** Changed in: digikam (Ubuntu) Status: New = Incomplete -- Linear Histogram is always empty https://bugs.launchpad.net/bugs/497620 You received this bug notification because you are a direct subscriber of the bug. Fixed in 1.0 karmic-backports -- Linear Histogram is always empty https://bugs.launchpad.net/bugs/497620 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 497620] Re: Linear Histogram is always empty
** Bug watch added: KDE Bug Tracking System #163286 http://bugs.kde.org/show_bug.cgi?id=163286 ** Also affects: digikam via http://bugs.kde.org/show_bug.cgi?id=163286 Importance: Unknown Status: Unknown -- Linear Histogram is always empty https://bugs.launchpad.net/bugs/497620 You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to digikam in ubuntu. -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
[Bug 497620] Re: Linear Histogram is always empty
** Summary changed: - Linear Histogram are always empty + Linear Histogram is always empty -- Linear Histogram is always empty https://bugs.launchpad.net/bugs/497620 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 497620] Re: Linear Histogram are always empty
** Attachment added: Dependencies.txt http://launchpadlibrarian.net/36892004/Dependencies.txt ** Attachment added: XsessionErrors.txt http://launchpadlibrarian.net/36892005/XsessionErrors.txt -- Linear Histogram are always empty https://bugs.launchpad.net/bugs/497620 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
