[magick-users] Adding text to an image

[zentara]

On Fri, 21 Nov 2008 09:20:00 -0600
"Greg Lindstrom" <gslindstrom at gmail.com> wrote:

>Hello,
>
>I am using 'convert' to add a claim number to a tif image and convert it to
>a pdf image.  My problem is that the scans we are processing sometimes are
>not ideally aligned and have a black border, so we can not read all of the
>claim number.  Can I define a white background behind the claim number so I
>can always read it?  How is that done?  If you could give a short
>explination or point me to the appropriate documentation I would be
>grateful.
>
>Thanks,
>--greg

See  http://www.imagemagick.org/Usage/annotating/

I'm not the best at these commandline usages, I usually use Perl,
but here is something to get you started. It makes a test.tif that is black, 
then make a second tif that is white, and contains the black number, then it overlays it. 

You can alter the script to take a file=$2 argument, so you can
process your tifs in batches.

#######################################
#!/bin/sh
#usage: ./thisscript  number 

num=$1

# make a test tif in black
convert -size 300x300 xc:black comp.tif

# manually make the number image  and composite it atop
convert -size 150x50 xc:white comp1.tif\
          -font Generic.ttf  -pointsize 36  -fill black  -stroke black \
          -gravity 'Center'  \
          -annotate 0 $num \
          comp1.tif 

convert comp.tif comp1.tif -compose ATop -geometry +30+30 -composite comp3.tif
#########################################

I'm sure there is a better way, maybe Mr. Thyssen will chime in with improvements. :-)

zentara


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I'm not really a human, but I play one on earth.
http://zentara.net/Remember_How_Lucky_You_Are.html