Amadeus W. M. a écrit : > 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? All these answers about adding comment text to jpeg are interresting but the result is "binary". I have been seeking for a while (and did not find an answer) on how to annotate an image with a "grep readable" annotation. If I use Gimp or ImageMagick, to write the comment "foo" in an image, grep foo image.jpg returns "binary file image.jpg matches". Is there a way to add a comment in ascii characters in an image? And to be able to use grep to find the images with a particular string in it? To be more clear: I am working with image of manuscripts and I want to able to add a commentary to each image like "in this image the subjet is ..." Then I could use grep to find out what are the images which contain a particular subject. There is some tool like this with gThumb, but the commentaries are in separates files, written in xml (cannot use grep!) and this is quite tricky to maintain a synchronisation between several computers (using rsync for instance). Thanks. -- François Patte UFR de mathématiques et informatique Université Paris 5 - Paris http://www.math-info.univ-paris5.fr/~patte
