editing with Color Management enabled is very slow?

[Elle Stone]

On 4/27/13, Marcel Wiesweg <[hidden email]> wrote:
>
> V4 profiles require lcms2, doesn't it?
>
It depends on the application. Unlike the argyllcms utilities (many
perhaps all of which choke on V4 profiles), Cinepaint and Gimp 2.9
both use lcms1 and can read/handle V4 profiles; probably digiKam can
too; they just can't read the utf8 descriptions. I seem to recall from
the icc specs that V4 is supposed to be backwards compatible to some
extent.

>
> Did you successfully compile and test digikam with lcms2? If it works, I
> would  like to make it the default if available, I guess it's better and faster.
>
My apologies, no. I tried to install Gnome3 on my main computer, the
net result of which was that my main computer's openSUSE install was
rendered unuseable. I'm installing Gentoo in its place and I'll
attempt the digiKam compile when Gentoo is up and running (Gentoo has
a bit of a learning curve).

On my laptop I have several flavors of Linux installed, including
Kubuntu 12.10, which has Kubuntu backports repository
"digiKam/showFoto 3.1.0" installed. "Components" shows that it's using
libLCMS 2040, does that mean it's using lcms2? If so, it seems fine to
me, though I've only actually checked the showFoto part.

If it would be useful I can send you a V4 monitor profile (the colord
laptop "edid" profile) to experiment with.
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[Gilles Caulier-4]

No. There is no option to remove Exif thumb in editor saveas JPEG dialog (as gimp has)

But with Batch Queue Manager, there is a tool to remove Metadata. Try it.

Gilles Caulier

2013/4/27 Carl McGrath <[hidden email]>

Is there a way to configure DigiKam to remove the JPEG thumbnail from the EXIF metadata when it gets rewritten to the file?

I am dealing with a poorly implemented  third party streaming reader client (DirecTV settop) that wants to display the thumbnail rather than the full image.

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[carl33914]

Thanks for the suggestion, Gilles.
I have been using exiftool from cli to remove the thumbnails, as I would rather not remove all exif.

And, by the way, thanks for your continued work guiding Digiam  development and improvement.
It is a great tool, and just keeps getting better.

Whenever some asks me what is so great about Open Source Software, I just suggest they check out Digikam.

On 04/27/2013 02:12 PM, Gilles Caulier wrote:

No. There is no option to remove Exif thumb in editor saveas JPEG dialog (as gimp has)

But with Batch Queue Manager, there is a tool to remove Metadata. Try it.

Gilles Caulier

2013/4/27 Carl McGrath <[hidden email]>

Is there a way to configure DigiKam to remove the JPEG thumbnail from the EXIF metadata when it gets rewritten to the file?

I am dealing with a poorly implemented  third party streaming reader client (DirecTV settop) that wants to display the thumbnail rather than the full image.

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[Marcel Wiesweg]

>
> If it would be useful I can send you a V4 monitor profile (the colord
> laptop "edid" profile) to experiment with.

Just send it by mail, but I dont know when I find time to experiment with it.
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[Ross Lansdell]

I don't think you meant to send this email to me!

On Apr 28, 2013 5:36 PM, "Marcel Wiesweg" <[hidden email]> wrote:

>
> If it would be useful I can send you a V4 monitor profile (the colord
> laptop "edid" profile) to experiment with.

Just send it by mail, but I dont know when I find time to experiment with it.
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[Peter Albrecht]

Hi Erik,

On 22.03.2013 15:48, Erik Felthauser wrote:
> When I do not have color management enabled, editing photos is quite fast.
> When I turn on color management, editing photos is so slow. Just opening
> the editing window takes fully 5 to 8 seconds. Even just selecting an area
> for cropping, takes 5 second for the system to catch up, and CPU goes up
> very high, 50% just for making selection, 100% for other things. Resize the
> selection area takes 5 sec or more.
> Turn off color management again, and everything is fast again. Opening edit
> window is immediate, selection is immediate, etc.

with digiKam 3.2.0 I encountered, too, some digiKam
slowdown, because of enabled color management.
I opened a bug at BKO:

https://bugs.kde.org/show_bug.cgi?id=322789

Regards,
        Peter
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