Color Effects
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Re: Color Effects
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I can confirm this, and also DistortionFX looks totally different in the final
image. This might be because we use the preview image for the calculation during user input, and apply those settings to the final, much bigger image later. This might cause different looks. I assume this is true for most filters then that use a preview image (instead of the full size). Gilles, could this be the cause? David, can you please open a bugreport on this? If no one already exists of course. Andi On Saturday 27 June 2009 22:23:22 davidvincentjones wrote: > I have been playing with 'color effects' recently but find that the effect > shown in the preview is vastly different from the effect set on the image. > The 'find edges' I find useful for special purposes but the color shift > that occurs once I click OK is very large and dificult to predict. > Ver 0.11.0 on Ubuntu 8.10 _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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2009/6/29 Andi Clemens <[hidden email]>:
> I can confirm this, and also DistortionFX looks totally different in the final > image. > This might be because we use the preview image for the calculation during user > input, and apply those settings to the final, much bigger image later. > This might cause different looks. > I assume this is true for most filters then that use a preview image (instead > of the full size). > > Gilles, > could this be the cause? No. I have already found this issue, when code have been ported to Qt4. If i remember, KDE3 code don't have this problem. Gilles > > David, > can you please open a bugreport on this? If no one already exists of course. > > Andi > > On Saturday 27 June 2009 22:23:22 davidvincentjones wrote: >> I have been playing with 'color effects' recently but find that the effect >> shown in the preview is vastly different from the effect set on the image. >> The 'find edges' I find useful for special purposes but the color shift >> that occurs once I click OK is very large and dificult to predict. >> Ver 0.11.0 on Ubuntu 8.10 > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users > Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
Re: Color Effects
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Gilles,
KDE3 version has the same problem, it never worked. For me it is "logical" that a smaller image size must have a different look when the same parameters are applied as to the full version. Makes sense to me. See this video: http://digikam3rdparty.free.fr/misc.tarballs/temp/colorfx.ogv If the issue is really the difference between preview and final image size, then a lot of filters don't work correctly, not only ColorFX and DistortionFX, but also sharpen, blur etc... Andi On Monday 29 June 2009 17:27:42 Gilles Caulier wrote: > 2009/6/29 Andi Clemens <[hidden email]>: > > I can confirm this, and also DistortionFX looks totally different in the > > final image. > > This might be because we use the preview image for the calculation during > > user input, and apply those settings to the final, much bigger image > > later. This might cause different looks. > > I assume this is true for most filters then that use a preview image > > (instead of the full size). > > > > Gilles, > > could this be the cause? > > No. I have already found this issue, when code have been ported to Qt4. > > If i remember, KDE3 code don't have this problem. > > Gilles > > > David, > > can you please open a bugreport on this? If no one already exists of > > course. > > > > Andi > > > > On Saturday 27 June 2009 22:23:22 davidvincentjones wrote: > >> I have been playing with 'color effects' recently but find that the > >> effect shown in the preview is vastly different from the effect set on > >> the image. The 'find edges' I find useful for special purposes but the > >> color shift that occurs once I click OK is very large and dificult to > >> predict. Ver 0.11.0 on Ubuntu 8.10 > > > > _______________________________________________ > > Digikam-users mailing list > > [hidden email] > > https://mail.kde.org/mailman/listinfo/digikam-users > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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2009/6/30 Andi Clemens <[hidden email]>:
> Gilles, > > KDE3 version has the same problem, it never worked. > For me it is "logical" that a smaller image size must have a different look > when the same parameters are applied as to the full version. > Makes sense to me. > > See this video: > http://digikam3rdparty.free.fr/misc.tarballs/temp/colorfx.ogv yes, never tested this one. but, distorsion work fine with KDE3. The some color tools (not all) use neighbouring pixels. As preview and target image size are differents, result are not the same. The only way to fix it is to use real image data and rewrite editor tool preview widget with zomming capabilities. Gilles > > If the issue is really the difference between preview and final image size, > then a lot of filters don't work correctly, not only ColorFX and DistortionFX, > but also sharpen, blur etc... > > Andi > > On Monday 29 June 2009 17:27:42 Gilles Caulier wrote: >> 2009/6/29 Andi Clemens <[hidden email]>: >> > I can confirm this, and also DistortionFX looks totally different in the >> > final image. >> > This might be because we use the preview image for the calculation during >> > user input, and apply those settings to the final, much bigger image >> > later. This might cause different looks. >> > I assume this is true for most filters then that use a preview image >> > (instead of the full size). >> > >> > Gilles, >> > could this be the cause? >> >> No. I have already found this issue, when code have been ported to Qt4. >> >> If i remember, KDE3 code don't have this problem. >> >> Gilles >> >> > David, >> > can you please open a bugreport on this? If no one already exists of >> > course. >> > >> > Andi >> > >> > On Saturday 27 June 2009 22:23:22 davidvincentjones wrote: >> >> I have been playing with 'color effects' recently but find that the >> >> effect shown in the preview is vastly different from the effect set on >> >> the image. The 'find edges' I find useful for special purposes but the >> >> color shift that occurs once I click OK is very large and dificult to >> >> predict. Ver 0.11.0 on Ubuntu 8.10 >> > >> > _______________________________________________ >> > Digikam-users mailing list >> > [hidden email] >> > https://mail.kde.org/mailman/listinfo/digikam-users >> >> _______________________________________________ >> Digikam-users mailing list >> [hidden email] >> https://mail.kde.org/mailman/listinfo/digikam-users > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users > Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
Re: Color Effects
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I'm afraid they don't work fine, I just tested it:
http://img34.imageshack.us/img34/2659/compareddistortionfx01.jpg http://img34.imageshack.us/img34/4974/compareddistortionfx02o.jpg The first image is a direct compare, the second a difference overlay. As long as we use a reduced version in the editor, I guess mostly all filters fail a little bit. This is the same issue with the InsertText tool for example, it is always offset by 6-10 pixels. So yes, fixing this will mean to use the real image data... Andi On Tuesday 30 June 2009 14:40:52 Gilles Caulier wrote: > 2009/6/30 Andi Clemens <[hidden email]>: > > Gilles, > > > > KDE3 version has the same problem, it never worked. > > For me it is "logical" that a smaller image size must have a different > > look when the same parameters are applied as to the full version. > > Makes sense to me. > > > > See this video: > > http://digikam3rdparty.free.fr/misc.tarballs/temp/colorfx.ogv > > yes, never tested this one. but, distorsion work fine with KDE3. > > The some color tools (not all) use neighbouring pixels. As preview and > target image size are differents, result are not the same. > > The only way to fix it is to use real image data and rewrite editor > tool preview widget with zomming capabilities. > > Gilles > > > If the issue is really the difference between preview and final image > > size, then a lot of filters don't work correctly, not only ColorFX and > > DistortionFX, but also sharpen, blur etc... > > > > Andi > > > > On Monday 29 June 2009 17:27:42 Gilles Caulier wrote: > >> 2009/6/29 Andi Clemens <[hidden email]>: > >> > I can confirm this, and also DistortionFX looks totally different in > >> > the final image. > >> > This might be because we use the preview image for the calculation > >> > during user input, and apply those settings to the final, much bigger > >> > image later. This might cause different looks. > >> > I assume this is true for most filters then that use a preview image > >> > (instead of the full size). > >> > > >> > Gilles, > >> > could this be the cause? > >> > >> No. I have already found this issue, when code have been ported to Qt4. > >> > >> If i remember, KDE3 code don't have this problem. > >> > >> Gilles > >> > >> > David, > >> > can you please open a bugreport on this? If no one already exists of > >> > course. > >> > > >> > Andi > >> > > >> > On Saturday 27 June 2009 22:23:22 davidvincentjones wrote: > >> >> I have been playing with 'color effects' recently but find that the > >> >> effect shown in the preview is vastly different from the effect set > >> >> on the image. The 'find edges' I find useful for special purposes but > >> >> the color shift that occurs once I click OK is very large and > >> >> dificult to predict. Ver 0.11.0 on Ubuntu 8.10 > >> > > >> > _______________________________________________ > >> > Digikam-users mailing list > >> > [hidden email] > >> > https://mail.kde.org/mailman/listinfo/digikam-users > >> > >> _______________________________________________ > >> Digikam-users mailing list > >> [hidden email] > >> https://mail.kde.org/mailman/listinfo/digikam-users > > > > _______________________________________________ > > Digikam-users mailing list > > [hidden email] > > https://mail.kde.org/mailman/listinfo/digikam-users > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
Re: Color Effects
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In reply to this post by Gilles Caulier-4
The same is true for autocorrection:
http://digikam3rdparty.free.fr/misc.tarballs/temp/autocorrection.ogv Hmm I'm afraid that nearly every tool is not working correct, that uses the preview version of an image. This is a fatal bug I would say. It is also true for FreeRotation and AspectRatio, just tried it and compared the results to Gimp and Krita. Andi On Monday 29 June 2009 17:27:42 Gilles Caulier wrote: > 2009/6/29 Andi Clemens <[hidden email]>: > > I can confirm this, and also DistortionFX looks totally different in the > > final image. > > This might be because we use the preview image for the calculation during > > user input, and apply those settings to the final, much bigger image > > later. This might cause different looks. > > I assume this is true for most filters then that use a preview image > > (instead of the full size). > > > > Gilles, > > could this be the cause? > > No. I have already found this issue, when code have been ported to Qt4. > > If i remember, KDE3 code don't have this problem. > > Gilles > > > David, > > can you please open a bugreport on this? If no one already exists of > > course. > > > > Andi > > > > On Saturday 27 June 2009 22:23:22 davidvincentjones wrote: > >> I have been playing with 'color effects' recently but find that the > >> effect shown in the preview is vastly different from the effect set on > >> the image. The 'find edges' I find useful for special purposes but the > >> color shift that occurs once I click OK is very large and dificult to > >> predict. Ver 0.11.0 on Ubuntu 8.10 > > > > _______________________________________________ > > Digikam-users mailing list > > [hidden email] > > https://mail.kde.org/mailman/listinfo/digikam-users > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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