running a small shell script in order to turn images into grey

[Martin Kaspar]

hello dear digikam-fans


how to view photos and to rapidly change the major categories

i have several hundred images (photographs) taht i want to view on opensuse linux version 13.1


i want to view the images - and of while doing so i want to turn the colored images into b/w

Question; which is the best - ie. the quickest way to do so.

note; i have installed the following thigns on my opensuse 13.1:

- gimp the great grahical tool
- digicam - the great tool to view images and pictures
- Gwenview Version 4.11.4 on KDE 4.11.5


so again here the question: which tool allowes to view the color(ed) image and to turn it - on the fly - in to black and white?

BTW: can i tell linux to swith the colors - in general - to black and white? is this doable...


looks like we could write a small shell script, utilizing imagemagick.- maybe like this:

for i in *jpg ; do mogrify -colorspace Gray "$i" ; done

this is just a quick hack. i haven't tried it. also, it's not interactive and simply changes all jpg's to grayscale, even if they already are grayscale.
btw we need more information about imagemagick.


see the results:

]martin@linux-70ce:~/Bilder>
martin@linux-70ce:~/Bilder> for i in *jpg ; do mogrify -colorspace Gray "$i" ; done
mogrify: unable to open image `*jpg': Datei oder Verzeichnis nicht gefunden @ error/blob.c/OpenBlob/2643.
mogrify: no decode delegate for this image format `*jpg' @ error/constitute.c/ReadImage/552.
martin@linux-70ce:~/Bilder>


what can i do!?

On Sun, Sep 14, 2014 at 9:41 PM, <[hidden email]> wrote:

Send Digikam-users mailing list submissions to
        [hidden email]

To subscribe or unsubscribe via the World Wide Web, visit
        https://mail.kde.org/mailman/listinfo/digikam-users
or, via email, send a message with subject or body 'help' to
        [hidden email]

You can reach the person managing the list at
        [hidden email]

When replying, please edit your Subject line so it is more specific
than "Re: Contents of Digikam-users digest..."


Today's Topics:

   1. Re: how to browse a (image) directory on my       harddrive - not
      possible - i only can view certain "albums" (Remco Vi?tor)
   2. Re: Viewing and Setting the GPSDestination GPS?attributes
      (Michael G. Hansen)
   3. Digikam version 3.5: Cannot open the root. It is  not a
      physical location. (Martin Kaspar)


----------------------------------------------------------------------

Message: 1
Date: Sun, 14 Sep 2014 17:46:41 +0200
From: Remco Vi?tor <[hidden email]>
To: digiKam - Home Manage your photographs as a professional with the
        power of open source <[hidden email]>
Subject: Re: [Digikam-users] how to browse a (image) directory on my
        harddrive - not possible - i only can view certain "albums"
Message-ID: <2207876.Ke0qJISJhm@manticore>
Content-Type: text/plain; charset="ISO-8859-1"

On Sunday 14 September 2014 17:01:35 Martin Kaspar wrote:
> hello
>
> i wonder why i am not able to browse and view images in digicam that are
on
> my drive
>
>
> see the path
> home/my_name/images
>
>
> why am in not abe to browse the drive - with folders that contain images?
>
> need your advice
>
> in other words: the question is:
>
> how to browse a (image) directory on my harddrive - not possible - i only
> can view certain "albums"
>
>
>
> btw - i run version 3.5 - is this the newest?
>
> love to hear from you


First of all, when 'replying' to a message, you might want to remove
everything not relevant to your question/reply...

Second, with Digikam, you have to tell it where to find your images:
use the "Settings"->"Configure digikam" menu item, and then go to
"Collections" in the left column, and click "Add Collection" on the line
with "Local Collections". Then select the proper folder where you have
stored your images (highest level, subdirectories will be automatically
included and presented as 'albums'). As digikam will need to scan that
directory to to find all images, it doesn't just use the whole hard disk.

3.5.0 isn't the newest version, but still very useable for browsing a
collection and edit some images. The newest version is 4.2.0, but for me it
(still) has several problems while editing images.



------------------------------

Message: 2
Date: Sun, 14 Sep 2014 20:24:55 +0200
From: "Michael G. Hansen" <[hidden email]>
To: [hidden email]
Subject: Re: [Digikam-users] Viewing and Setting the GPSDestination
        GPS?attributes
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8; format=flowed

Hi Andreas,

we currently do not have any way of tracking this information inside of
Digikam. It is definitely a useful feature and I would like to include
it if libkgeomap is redesigned, but I currently do not have the time for
it. Please go ahead and file a wishlist bugreport, as the screenshots
you are showing look promising as UI suggestions. Please upload the
images to the bugtracker instead of using links, so they will not get lost.

Best regards,

Michael

On 13.09.2014 12:19, Andreas Neumann wrote:
> Hi,
>
> I am a digikam user and really like the functionality that Digikam
> provides. Thank you for all the work you as developers invest in the
> software!
>
> One feature I am missing and would like to see implemented in Digikam is
> the ability to set the GPSDestination EXIF metadata.
>
> I am organizing the photos geographically. The position the photo is
> taken is recorded automatically from my Solmeta GPS tagger. However,
> more important than the position the photo is taken is the position we
> are looking at when taking the picture, esp. in the case of tele-lense
> pictures of mountains.
>
> The goal is being able to organize, find and view the viewing angle of
> my photos, like in this screenshot of an application I did several years
> ago: http://www.carto.net/neumann/temp/geophoto_view_angle.png - see
> also http://www.geofoto.ch/geophotomap/ (currently does not work in all
> browsers, need to fix a few things). Should work in Firefox.
>
> Now my question:
>
> These destination EXIF metadata needs to be set by hand. Digikam already
> has the map view of where the photo was taken. Would it be possible to
> enhance Digikam to allow the edition of the GPSDestination metadata.
> This concerns the following EXIF tags:
>
> GPSDestLatitude
> GPSDestLongitude
> GPSDestLatitudeRef
> GPSDestLongitudeRef
> GPSDestBearingRef
> GPSDestDistanceRef
> GPSDestDistance
>
> Some GPS tagger device also record bearing data (electronic compass).
>
> Based on the size of the photo sensor and the fov one can then draw a
> viewing angle like in
> http://www.carto.net/neumann/temp/geophoto_view_angle.png
>
> I am not a developer but I would be willing to pay a digikam developer
> to work on the following:
>
> 1. ability to edit all of the GPSDestxx EXIF data listed above - both
> interactively in the map, but also based on numeric values (line input
> widgets)
>
> 2. ability to draw the viewing angle on a map like shown in
> http://www.carto.net/neumann/temp/geophoto_view_angle.png
>
> Is there a digikam developer out there who would like to work on these
> features if I would fund the work?
>
> Thanks a lot for your replies.
>
> Andreas Neumann
> Gr?t (Gossau ZH), Switzerland
>
>
>
>
> _______________________________________________
> Digikam-users mailing list
> [hidden email]
> https://mail.kde.org/mailman/listinfo/digikam-users
>



------------------------------

Message: 3
Date: Sun, 14 Sep 2014 21:41:17 +0200
From: Martin Kaspar <[hidden email]>
To: digiKam - Home Manage your photographs as a professional with the
        power of open source <[hidden email]>
Subject: [Digikam-users] Digikam version 3.5: Cannot open the root. It
        is      not a physical location.
Message-ID:
        <CAErGYgT1TrmthEqAE15wR+jSDMNX1t42HYYrw=[hidden email]>
Content-Type: text/plain; charset="utf-8"

Digikam version 3.5: Cannot open the root. It is not a physical location.




run digiKam version 3.5  on opensuse 13.1


i wonder if i can see images that are not (!!) in a album!?

Why am i not able to do so?

all i  can see are images that are associated to an album;

why cant i open images in the document root of my opensuse version  13.1?

if i try to open an Album with the dolphin - i get back the result:


Cannot open the root. It is not a physical location.


WHY IS THIS SO!?


On Sun, Sep 14, 2014 at 5:01 PM, <[hidden email]> wrote:

> Send Digikam-users mailing list submissions to
>         [hidden email]
>
> To subscribe or unsubscribe via the World Wide Web, visit
>         https://mail.kde.org/mailman/listinfo/digikam-users
> or, via email, send a message with subject or body 'help' to
>         [hidden email]
>
> You can reach the person managing the list at
>         [hidden email]
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Digikam-users digest..."
>
>
> Today's Topics:
>
>    1. how to browse a (image) directory on my harddrive - not
>       possible - i only can view certain "albums" (Martin Kaspar)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 14 Sep 2014 17:01:35 +0200
> From: Martin Kaspar <[hidden email]>
> To: digiKam - Home Manage your photographs as a professional with the
>         power of open source <[hidden email]>, Martin Kaspar
>         <[hidden email]>
> Subject: [Digikam-users] how to browse a (image) directory on my
>         harddrive - not possible - i only can view certain "albums"
> Message-ID:
>         <
> [hidden email]>
> Content-Type: text/plain; charset="utf-8"
>
> hello
>
> i wonder why i am not able to browse and view images in digicam that are on
> my drive
>
>
> see the path
> home/my_name/images
>
>
> why am in not abe to browse the drive - with folders that contain images?
>
> need your advice
>
> in other words: the question is:
>
> how to browse a (image) directory on my harddrive - not possible - i only
> can view certain "albums"
>
>
>
> btw - i run version 3.5 - is this the newest?
>
> love to hear from you
>
> On Sun, Sep 14, 2014 at 1:21 PM, <[hidden email]> wrote:
>
> > Send Digikam-users mailing list submissions to
> >         [hidden email]
> >
> > To subscribe or unsubscribe via the World Wide Web, visit
> >         https://mail.kde.org/mailman/listinfo/digikam-users
> > or, via email, send a message with subject or body 'help' to
> >         [hidden email]
> >
> > You can reach the person managing the list at
> >         [hidden email]
> >
> > When replying, please edit your Subject line so it is more specific
> > than "Re: Contents of Digikam-users digest..."
> >
> >
> > Today's Topics:
> >
> >    1. Re: how to switch the color to black and white <- on the fly
> >       (Gilles Caulier)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Sun, 14 Sep 2014 13:20:49 +0200
> > From: Gilles Caulier <[hidden email]>
> > To: digiKam - Home Manage your photographs as a professional with the
> >         power of open source <[hidden email]>
> > Cc: Martin Kaspar <[hidden email]>
> > Subject: Re: [Digikam-users] how to switch the color to black and
> >         white <- on the fly
> > Message-ID:
> >         <
> > [hidden email]>
> > Content-Type: text/plain; charset="utf-8"
> >
> > digiKam has in Editor and Batch queue Manager a B&W converter which a
> lots
> > of analog film emulation.
> >
> > There is also Infrared converter...
> >
> > Gilles Caulier
> >
> > 2014-09-14 12:00 GMT+02:00 Martin Kaspar <[hidden email]>:
> >
> > > hello dear digikam-experts
> > >
> > >
> > >
> > > how to view photos and to rapidly change the major categories
> > >
> > > i have several hundred images (photographs) taht i want to view on
> > > opensuse linux version 13.1
> > >
> > > i want to view the images - and of while doing so i want to turn the
> > > colored images into b/w
> > >
> > > Question; which is the best - ie. the quickest way to do so.
> > >
> > > note; i have installed the following thigns on my opensuse 13.1:
> > >
> > > - gimp the great grahical tool
> > > - digicam - the great tool to view images and pictures
> > > - Gwenview Version 4.11.4 on  KDE 4.11.5
> > >
> > >
> > > so again here the question: which tool allowes to view the color(ed)
> > image
> > > and to turn it - on the fly - in to black and white?
> > >
> > > BTW: can i tell linux to swith the colors - in general - to black and
> > > white? is this doable...
> > >
> > > love to hear from you
> > >
> > > martin
> > >
> > > On Sat, Sep 13, 2014 at 2:00 PM, <[hidden email]>
> wrote:
> > >
> > >> Send Digikam-users mailing list submissions to
> > >>         [hidden email]
> > >>
> > >> To subscribe or unsubscribe via the World Wide Web, visit
> > >>         https://mail.kde.org/mailman/listinfo/digikam-users
> > >> or, via email, send a message with subject or body 'help' to
> > >>         [hidden email]
> > >>
> > >> You can reach the person managing the list at
> > >>         [hidden email]
> > >>
> > >> When replying, please edit your Subject line so it is more specific
> > >> than "Re: Contents of Digikam-users digest..."
> > >>
> > >>
> > >> Today's Topics:
> > >>
> > >>    1. Re: Fw: Help please? (Francis Corvin)
> > >>    2. Re: Fw: Help please? (MP)
> > >>    3. Re: Fw: Help please? (Gilles Caulier)
> > >>    4. Viewing and Setting the GPSDestination GPS?attributes
> > >>       (Andreas Neumann)
> > >>
> > >>
> > >> ----------------------------------------------------------------------
> > >>
> > >> Message: 1
> > >> Date: Fri, 12 Sep 2014 13:45:09 +0100
> > >> From: Francis Corvin <[hidden email]>
> > >> To: Alicia Giambarresi <[hidden email]>,  digiKam - Home
> > >>         Manage your photographs as a professional with the power of
> open
> > >>         source <[hidden email]>
> > >> Subject: Re: [Digikam-users] Fw: Help please?
> > >> Message-ID: <[hidden email]>
> > >> Content-Type: text/plain; charset="iso-8859-1"
> > >>
> > >> As far as I know this is a broader problem than Digikam. It's a
> > >> "feature" of using KDE apps in a non-KDE environment. There was a
> thread
> > >> about this recently and IIRC there is no fix. I also have Linux Mint
> and
> > >> have other applications that exhibit the same problem. I'm hoping I am
> > >> wrong, BTW!
> > >>
> > >> Francis
> > >>
> > >> On 2014-09-10 13:13, Alicia Giambarresi wrote:
> > >> > BTW I use Linux Mint OS
> > >> >
> > >> > ----- Forwarded Message -----
> > >> > *From:* Alicia Giambarresi <[hidden email]>
> > >> > *To:* "[hidden email]" <[hidden email]>
> > >> > *Sent:* Wednesday, 10 September 2014, 13:12
> > >> > *Subject:* Help please?
> > >> >
> > >> > I want to use showfoto but am having problems: when I hover over
> > >> > icons, tools, options etc., the text is pale grey on yellow and I
> > >> > can't read it at all. Does anyone know how to change the text colour
> > >> > setting, please?
> > >> >
> > >> > I'm also having problems reducing the size of photo images: they are
> > >> > all approx 3.5MB which makes it impossible to email or post on
> > >> > Facebook. Maybe if I could read the showfoto text, I might find the
> > >> > answer to this one?
> > >> >
> > >> > Thanks very much
> > >> > Lucia
> > >> >
> > >> >
> > >> >
> > >> >
> > >> > _______________________________________________
> > >> > Digikam-users mailing list
> > >> > [hidden email]
> > >> > https://mail.kde.org/mailman/listinfo/digikam-users
> > >>
> > >> -------------- next part --------------
> > >> An HTML attachment was scrubbed...
> > >> URL: <
> > >>
> >
> http://mail.kde.org/pipermail/digikam-users/attachments/20140912/14deb01b/attachment-0001.html
> > >> >
> > >>
> > >> ------------------------------
> > >>
> > >> Message: 2
> > >> Date: Fri, 12 Sep 2014 19:35:30 +0200
> > >> From: MP <[hidden email]>
> > >> To: digiKam - Home Manage your photographs as a professional with the
> > >>         power of open source <[hidden email]>
> > >> Subject: Re: [Digikam-users] Fw: Help please?
> > >> Message-ID:
> > >>         <CAMkN=-
> > >> [hidden email]>
> > >> Content-Type: text/plain; charset="utf-8"
> > >>
> > >> Well, I use Linux Mint as my OS as well and I have Widget style set to
> > >> "GTK+". This setting is OK, I  can read anything mentioned above.
> > >> BR,
> > >> Milos
> > >>
> > >> 2014-09-12 14:45 GMT+02:00 Francis Corvin <[hidden email]>:
> > >>
> > >> >  As far as I know this is a broader problem than Digikam. It's a
> > >> "feature"
> > >> > of using KDE apps in a non-KDE environment. There was a thread about
> > >> this
> > >> > recently and IIRC there is no fix. I also have Linux Mint and have
> > other
> > >> > applications that exhibit the same problem. I'm hoping I am wrong,
> > BTW!
> > >> >
> > >> > Francis
> > >> >
> > >> >
> > >> > On 2014-09-10 13:13, Alicia Giambarresi wrote:
> > >> >
> > >> >  BTW I use Linux Mint OS
> > >> >
> > >> >   ----- Forwarded Message -----
> > >> >  *From:* Alicia Giambarresi <[hidden email]>
> > >> > <[hidden email]>
> > >> > *To:* "[hidden email]" <[hidden email]>
> > >> > <[hidden email]> <[hidden email]>
> > >> > *Sent:* Wednesday, 10 September 2014, 13:12
> > >> > *Subject:* Help please?
> > >> >
> > >> >   I want to use showfoto but am having problems: when I hover over
> > >> icons,
> > >> > tools, options etc., the text is pale grey on yellow and I can't
> read
> > >> it at
> > >> > all. Does anyone know how to change the text colour setting, please?
> > >> >
> > >> >  I'm also having problems reducing the size of photo images: they
> are
> > >> all
> > >> > approx 3.5MB which makes it impossible to email or post on Facebook.
> > >> Maybe
> > >> > if I could read the showfoto text, I might find the answer to this
> > one?
> > >> >
> > >> >  Thanks very much
> > >> > Lucia
> > >> >
> > >> >
> > >> >
> > >> >
> > >> > _______________________________________________
> > >> > Digikam-users mailing [hidden email]://
> > >> mail.kde.org/mailman/listinfo/digikam-users
> > >> >
> > >> >
> > >> >
> > >> > _______________________________________________
> > >> > Digikam-users mailing list
> > >> > [hidden email]
> > >> > https://mail.kde.org/mailman/listinfo/digikam-users
> > >> >
> > >> >
> > >> -------------- next part --------------
> > >> An HTML attachment was scrubbed...
> > >> URL: <
> > >>
> >
> http://mail.kde.org/pipermail/digikam-users/attachments/20140912/19379160/attachment-0001.html
> > >> >
> > >>
> > >> ------------------------------
> > >>
> > >> Message: 3
> > >> Date: Fri, 12 Sep 2014 20:16:24 +0200
> > >> From: Gilles Caulier <[hidden email]>
> > >> To: digiKam - Home Manage your photographs as a professional with the
> > >>         power of open source <[hidden email]>
> > >> Subject: Re: [Digikam-users] Fw: Help please?
> > >> Message-ID:
> > >>         <
> > >> [hidden email]>
> > >> Content-Type: text/plain; charset=UTF-8
> > >>
> > >> There are 2 settings which have effects on application colors :
> > >>
> > >> - Widget style.
> > >> - Color scheme.
> > >>
> > >> For both, you can add new one using distro installer, but the most
> > >> important is Color Scheme. From KDE, there are come from kdeartworks
> > >> package.
> > >>
> > >> Best widget style is Oxygen (KDE default). A lots of other styles are
> > >> bugous and not maintained...
> > >>
> > >> Gilles Caulier
> > >>
> > >> 2014-09-12 19:35 GMT+02:00 MP <[hidden email]>:
> > >> > Well, I use Linux Mint as my OS as well and I have Widget style set
> to
> > >> > "GTK+". This setting is OK, I  can read anything mentioned above.
> > >> > BR,
> > >> > Milos
> > >> >
> > >> > 2014-09-12 14:45 GMT+02:00 Francis Corvin <[hidden email]>:
> > >> >>
> > >> >> As far as I know this is a broader problem than Digikam. It's a
> > >> "feature"
> > >> >> of using KDE apps in a non-KDE environment. There was a thread
> about
> > >> this
> > >> >> recently and IIRC there is no fix. I also have Linux Mint and have
> > >> other
> > >> >> applications that exhibit the same problem. I'm hoping I am wrong,
> > BTW!
> > >> >>
> > >> >> Francis
> > >> >>
> > >> >>
> > >> >> On 2014-09-10 13:13, Alicia Giambarresi wrote:
> > >> >>
> > >> >> BTW I use Linux Mint OS
> > >> >>
> > >> >> ----- Forwarded Message -----
> > >> >> From: Alicia Giambarresi <[hidden email]>
> > >> >> To: "[hidden email]" <[hidden email]>
> > >> >> Sent: Wednesday, 10 September 2014, 13:12
> > >> >> Subject: Help please?
> > >> >>
> > >> >> I want to use showfoto but am having problems: when I hover over
> > icons,
> > >> >> tools, options etc., the text is pale grey on yellow and I can't
> read
> > >> it at
> > >> >> all. Does anyone know how to change the text colour setting,
> please?
> > >> >>
> > >> >> I'm also having problems reducing the size of photo images: they
> are
> > >> all
> > >> >> approx 3.5MB which makes it impossible to email or post on
> Facebook.
> > >> Maybe
> > >> >> if I could read the showfoto text, I might find the answer to this
> > one?
> > >> >>
> > >> >> Thanks very much
> > >> >> Lucia
> > >> >>
> > >> >>
> > >> >>
> > >> >>
> > >> >> _______________________________________________
> > >> >> 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
> > >> >
> > >>
> > >>
> > >> ------------------------------
> > >>
> > >> Message: 4
> > >> Date: Sat, 13 Sep 2014 10:19:08 +0000
> > >> From: Andreas Neumann <[hidden email]>
> > >> To: digiKam <[hidden email]>
> > >> Subject: [Digikam-users] Viewing and Setting the GPSDestination
> > >>         GPS?attributes
> > >> Message-ID: <[hidden email]>
> > >> Content-Type: text/plain; charset=UTF-8
> > >>
> > >> Hi,
> > >>
> > >> I am a digikam user and really like the functionality that Digikam
> > >> provides. Thank you for all the work you as developers invest in the
> > >> software!
> > >>
> > >> One feature I am missing and would like to see implemented in Digikam
> is
> > >> the ability to set the GPSDestination EXIF metadata.
> > >>
> > >> I am organizing the photos geographically. The position the photo is
> > >> taken is recorded automatically from my Solmeta GPS tagger. However,
> > >> more important than the position the photo is taken is the position we
> > >> are looking at when taking the picture, esp. in the case of tele-lense
> > >> pictures of mountains.
> > >>
> > >> The goal is being able to organize, find and view the viewing angle of
> > >> my photos, like in this screenshot of an application I did several
> years
> > >> ago: http://www.carto.net/neumann/temp/geophoto_view_angle.png - see
> > >> also http://www.geofoto.ch/geophotomap/ (currently does not work in
> all
> > >> browsers, need to fix a few things). Should work in Firefox.
> > >>
> > >> Now my question:
> > >>
> > >> These destination EXIF metadata needs to be set by hand. Digikam
> already
> > >> has the map view of where the photo was taken. Would it be possible to
> > >> enhance Digikam to allow the edition of the GPSDestination metadata.
> > >> This concerns the following EXIF tags:
> > >>
> > >> GPSDestLatitude
> > >> GPSDestLongitude
> > >> GPSDestLatitudeRef
> > >> GPSDestLongitudeRef
> > >> GPSDestBearingRef
> > >> GPSDestDistanceRef
> > >> GPSDestDistance
> > >>
> > >> Some GPS tagger device also record bearing data (electronic compass).
> > >>
> > >> Based on the size of the photo sensor and the fov one can then draw a
> > >> viewing angle like in
> > >> http://www.carto.net/neumann/temp/geophoto_view_angle.png
> > >>
> > >> I am not a developer but I would be willing to pay a digikam developer
> > >> to work on the following:
> > >>
> > >> 1. ability to edit all of the GPSDestxx EXIF data listed above - both
> > >> interactively in the map, but also based on numeric values (line input
> > >> widgets)
> > >>
> > >> 2. ability to draw the viewing angle on a map like shown in
> > >> http://www.carto.net/neumann/temp/geophoto_view_angle.png
> > >>
> > >> Is there a digikam developer out there who would like to work on these
> > >> features if I would fund the work?
> > >>
> > >> Thanks a lot for your replies.
> > >>
> > >> Andreas Neumann
> > >> Gr?t (Gossau ZH), Switzerland
> > >>
> > >>
> > >>
> > >>
> > >>
> > >>
> > >> ------------------------------
> > >>
> > >> _______________________________________________
> > >> Digikam-users mailing list
> > >> [hidden email]
> > >> https://mail.kde.org/mailman/listinfo/digikam-users
> > >>
> > >>
> > >> End of Digikam-users Digest, Vol 112, Issue 14
> > >> **********************************************
> > >>
> > >
> > >
> > >
> > > --
> > >
> > >   <http://www.facebook.com/martin.kaspar.547>  [image:
> > > gplus_Seiten_Signatur] <
> > https://plus.google.com/u/0/104428351748591530426>
> > >
> > > _______________________________________________
> > > Digikam-users mailing list
> > > [hidden email]
> > > https://mail.kde.org/mailman/listinfo/digikam-users
> > >
> > >
> > -------------- next part --------------
> > An HTML attachment was scrubbed...
> > URL: <
> >
> http://mail.kde.org/pipermail/digikam-users/attachments/20140914/1fc76b78/attachment.html
> > >
> > -------------- next part --------------
> > A non-text attachment was scrubbed...
> > Name: image004.png
> > Type: image/png
> > Size: 1188 bytes
> > Desc: not available
> > URL: <
> >
> http://mail.kde.org/pipermail/digikam-users/attachments/20140914/1fc76b78/attachment.png
> > >
> > -------------- next part --------------
> > A non-text attachment was scrubbed...
> > Name: image002.png
> > Type: image/png
> > Size: 1053 bytes
> > Desc: not available
> > URL: <
> >
> http://mail.kde.org/pipermail/digikam-users/attachments/20140914/1fc76b78/attachment-0001.png
> > >
> >
> > ------------------------------
> >
> > _______________________________________________
> > Digikam-users mailing list
> > [hidden email]
> > https://mail.kde.org/mailman/listinfo/digikam-users
> >
> >
> > End of Digikam-users Digest, Vol 112, Issue 16
> > **********************************************
> >
>
>
>
> --
>
>   <http://www.facebook.com/martin.kaspar.547>  [image:
> gplus_Seiten_Signatur] <https://plus.google.com/u/0/104428351748591530426>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://mail.kde.org/pipermail/digikam-users/attachments/20140914/b7ec9c31/attachment.html
> >
> -------------- next part --------------
> A non-text attachment was scrubbed...
> Name: image002.png
> Type: image/png
> Size: 1053 bytes
> Desc: not available
> URL: <
> http://mail.kde.org/pipermail/digikam-users/attachments/20140914/b7ec9c31/attachment.png
> >
> -------------- next part --------------
> A non-text attachment was scrubbed...
> Name: image004.png
> Type: image/png
> Size: 1188 bytes
> Desc: not available
> URL: <
> http://mail.kde.org/pipermail/digikam-users/attachments/20140914/b7ec9c31/attachment-0001.png
> >
>
> ------------------------------
>
> _______________________________________________
> Digikam-users mailing list
> [hidden email]
> https://mail.kde.org/mailman/listinfo/digikam-users
>
>
> End of Digikam-users Digest, Vol 112, Issue 17
> **********************************************
>



--

  <http://www.facebook.com/martin.kaspar.547>  [image:
gplus_Seiten_Signatur] <https://plus.google.com/u/0/104428351748591530426>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.kde.org/pipermail/digikam-users/attachments/20140914/cc66634e/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.png
Type: image/png
Size: 1053 bytes
Desc: not available
URL: <http://mail.kde.org/pipermail/digikam-users/attachments/20140914/cc66634e/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image004.png
Type: image/png
Size: 1188 bytes
Desc: not available
URL: <http://mail.kde.org/pipermail/digikam-users/attachments/20140914/cc66634e/attachment-0001.png>

------------------------------

_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users


End of Digikam-users Digest, Vol 112, Issue 18
**********************************************

--

  

_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

[Wybo]

On 2014-09-14 22:06, Martin Kaspar wrote:
> for i in *jpg ; do mogrify -colorspace Gray "$i" ; done

you need to repeat "$i" for output:

for i in *jpg ; do mogrify -colorspace Gray "$i" "$i" ; done

>
> this is just a quick hack. i haven't tried it. also, it's not interactive and
> simply changes all jpg's to grayscale, even if they already are grayscale.

no problem to convert anyway, but you can use jpeginfo to check if it's
necessary (grey -> 8bit, color -> 24bit)

> btw we need more information about imagemagick.

man (1) mogrify
man (1) convert
man (1) ImageMagick
google...
--
Wybo
_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

[Lutz Epperlein-2]

Am Sun, 14 Sep 2014 22:06:15 +0200
schrieb Martin Kaspar <[hidden email]>:

> btw we need more information about imagemagick.

http://www.imagemagick.org/script/command-line-tools.php

Regards
Lutz
_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users