Re: [Gimp-developer] Asking for help/collaboration in nonprofit mini-project around covid-19

Also, not sure if it’s helpful but we wrote a simple imagemagick command
for something similar to what you’re asking for:

https://discuss.pixls.us/t/annotation-with-imagemagick-watermark-ish/1813?u=patdavid

Might have some luck with other ideas there for what you’re trying to do
(or the gimp-user list).

hth

On Fri, May 1, 2020 at 8:31 PM Ken Moffat via gimp-developer-list <
[email protected]> wrote:

> On Fri, May 01, 2020 at 11:21:18PM +0200, Ofnuts wrote:
> > On 01/05/2020 22:40, P. Cáliz wrote:
> > > Hi all
> > >
> > >     I am trying to launch a social (non-profit) mini-project based on
> the
> > > hashtag #EstasEnMisPensamientos / #YouAreOnMyMind.
> > >     I am going to publicly share a selection of my photos (a few
> hundred, I
> > > suppose there will be some good ones ;-) ) labeled with that hastag and
> > > with the URL of the collection, so that anyone can freely send them to
> > > family, friends, ... Also I will try to involve professional
> photographers,
> > > and entities that have their own collections (botanical gardens,
> museums,
> > > conservation societies of monuments such as La Alhambra de Granada or
> the
> > > Topkapi palace, etc), to contribute with material from their
> collections.
> > >     I do not know what success I can have, but being optimistic I must
> > > expect a volume of contributions that I will not be able to handle by
> > > myself, by hand. And it is for this that I request your help, perhaps
> > > someone can make a Script-fu that automates the treatment of the
> photos. I
> > > have only used Gimp sporadically to correct the color or contrast of my
> > > photos, but I have an absolute ignorance beyond this.
> > >
> > >     Ideally the script should run in a loop with the following actions:
> > >
> > >     - Take a photo from the originals directory A
> > >     - Adjust the photo to a maximum size (~ 2048 pix vertical or
> horizontal)
> > >     preserving the aspect ratio
> > >     - Add a frame around the image with the bottom side wider than the
> > >     others (similar to Polaroid photos), and write the hastag (english
> and
> > >     spanish), and the collection URL in this bottom border. This is
> just an
> > >     idea, I'm open to your artistic suggestions
> > >     - Export as .jpeg in the modified photos directory B
> > >     - If possible, move the original photo from A directory to the C
> > >     directory so that it is not treated again
> > >
> > >     Maybe it is necessary to define some additional detail, please
> feel free
> > > to ask me anything.
> > >
> > >     I will exclusively dedicate a Raspberry Pi 3 for Gimp to fly.
> > >     Every day I will try to download in the original directory "A" all
> the
> > > photos received at [email protected] (by the way, if someone
> knows
> > > how to automate this, I would be soooo grateful). And also every day I
> will
> > > upload all the taged photos in directory "B" to the public album (I'm
> still
> > > not sure of the URL, I will probably host it in google photos).
> > >
> > >     Any volunteer? Hope yes.
> >
> > Typically done with ImageMagick: https://imagemagick.org/index.php
> >
> > Some features:
> >
> > https://imagemagick.org/Usage/resize/
> >
> > https://imagemagick.org/Usage/text/
> >
> Probably getting a bit OT for gimp-dev, but I'll reply here anyway
> this time.
>
> For the rest, typically done with shell script(s) from bash since
> all you are doing is invoking programs with some options, e.g. 'cp'
> to move files from 'A' to 'C' IFF (if and only if) the modifications
> to create the file in B did not end in failure.
>
> Obviously, set aside some work space to play around with a *copy*
> of a file and then when the modifications seem to work on that file,
> try a copy of a different file.
>
> I've done the resizing in the past but I've never tried adding text
> on top, or borders.
>
> But the fun part will be downloading everything from the original
> directory, and then wiping out everything that is there, without
> losing anything that comes in after you have started the download.
>
> Perhaps list everything currently at the directory, wget each item
> in turn checking for no errors (e.g. full disk, non-responsive
> external server) make a backup (did I mention the aggravation caused
> by losing something someone sent you?) and only then rm the file
> from the original.
>
> Or do the rm at the end, but perhaps keeping a separate file of those
> jpegs you have successfully downloaded and adding the details to that
> file after tou have successfully downloaded a file.
>
> For IM there are lots of posts online.
>
> I've in the past used it to resize a batch of photos, the salient
> points were (from a bash script which was modifying the original
> in-place):
>
> for F in $*; do
>         echo "Processing $F" # I like scripts to keep me informed
>
>         # confirm it really is a jpeg, and find its dimensions
>         DIMENSIONS=$(identify $F | grep JPEG | awk '{ print $3}')
>         if [ -z "$DIMENSIONS" ]; then
>                 echo "ERROR: $F seems not to be a jpeg"
>                 exit 1
>         fi
>         WIDTH=$(echo $DIMENSIONS | cut -d 'x' -f1)
>         DEPTH=$(echo $DIMENSIONS | cut -d 'x' -f2)
>
>         if [ $WIDTH -gt 2048 ] || [ $DEPTH -gt 2048 ]; then
>                 mogrify -resize 2048x2048 $F
>         else
>                 echo "$F not resized, is only $WIDTH x $DEPTH"
>         fi
> done
>
> As with all old scripts, or hunks you find online, replace active
> commands by a comment of what will happen when doing it the first
> time, so in this case comment out the mogrify and add e.g.
>                 echo "will resize usign mogrify"
> or alternatively for a simple command like that just try the command
> on a copied jpeg to confirm it, and any other options you add, do
> the right think (then use 'identify' and 'display' afterwards).
>
> You might also need to consider how much upload space you have, and
> bandwidth for people viewing, if this becomes popular.  I'm guessing
> a jpeg of max dimension 2048 will typically be less than 2 MB, but
> YMMV.
>
> Also, you'll want to review the results at full size, even if most
> people have screens which are smaller than 2048x2048.
>
> ĸen
> --
>                  See You Later, Holy Poppadom!
>                     -- Red Dwarf, The Promised Land
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