adding text to JPEGs, in bulk
Amadeus W. M.
amadeus84 at verizon.net
Fri Sep 15 18:28:49 UTC 2006
On Sat, 16 Sep 2006 02:22:20 +0930, Tim wrote:
> Hi,
>
> Is there an easy way to add some text to a collection of JPEGs? For
> instance, I'd like to stamp the words "PROOF" across a collection of
> JPEGs I'm showing someone to pick out which ones they'll buy copies of,
> showing them a full sized, full quality, version of the images, but ones
> that they can't just nick. I really don't want to have to hand modify
> each image in turn, there's about 300 of them.
>
> --
> (Currently running FC4, occasionally trying FC5.)
>
> Don't send private replies to my address, the mailbox is ignored.
> I read messages from the public lists.
This is what you do:
1) The "convert" program from ImageMagick can do all sorts of
image transformations, including writing text on top of an image.
I don't know the syntax off the top of my head, so you'll have to
look that up. A simple
convert -h
will show you what it can do. You want to look at the -draw
primitive. Better yet, look here:
http://www.imagemagick.org/script/convert.php
For instance
convert -fill red -font Bookman-DemiItalic -pointsize 32 -draw "text 30,30 TEST" input.jpg output.jpg
2) Once you're happy with the results, do all jpgs in a for loop:
for file in *.jpg
do
outputname=`basename $file .jpg`_out.jpg
convert [drawing command] $file $outputname
done
You can do this directly at the prompt, or you can save it in
a bash script.
Command line comes in pretty handy, doesn't it?
More information about the fedora-list
mailing list