Image::Magick, GD, or Gimp modules are likely to help with that. Check their details to see exactly how.

Also see, Imager::Font. Together with Imager::Filters, you could probably put a text graphic anywhere you want within another graphic image.

I hope this helps.

This is a little example with Image::Magick:

#!/usr/bin/perl

use Image::Magick;

# create an image, white background, and save it

$base = Image::Magick->new();
$base->Set(size => '640x480');
$base->ReadImage('xc:orange');
$base->Write('./background.jpg');

# draw some text, crop it and save in a new image

$tile = Image::Magick->new();
$tile->Set(size => '600x200');
$tile->ReadImage('xc:white');
$tile->Annotate(font      => 'times.ttf',
                pointsize => 12,
                fill      => 'navy',
                text      => 'www.perlmonks.org',
                x         => 100,
                y         => 100);
$tile->Crop('0x0');
$tile->Write('./tile.jpg');

# read background

$image = Image::Magick->new();
$image->Read('./background.jpg');

# draw a red pixel

$image->Set('pixel[50,50]' => 'red');

# read another image

$image2 = Image::Magick->new();
$image2->Read('./tile.jpg');

# compose them

$image->Composite(image   => $image2,
                  compose => 'Over',
                  x       => 150,
                  y       => 150);

$image->Write('composition.jpg');
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## extracted and simplified from a bit of working code I have
my $fname = "/path/to/your/file.jpg";
my $text = "What you want to say.";

open (IMG, "<$fname") or die;
my $size = -s $fname;
my $data; 
read IMG, $data, $size;
close IMG;
die "blah" unless $data;

use GD;
# my $itype = image_type(getType_bymagic($data));
# die unless $itype eq "Jpeg";
# my $method = "newFrom${itype}Data";
my $method = "newFromJpegData";
my $i = GD::Image->$method($data, 1);
my $fg = $i->colorAllocate(102,102,102);

$i->string(gdMediumBoldFont,7,7,$text,$fg);
return \$i->png;
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Yes it's possible to do this in perl, as the others have already suggested.

If you didn't know then it might be worth looking at the command line tools from the imagemagick suite.

For example I wrote a console application to dump out images from my webcam to a file "foo.jpg" and then I call that in a shellscript to add some text to it:

# Get a temporary file
camgrab -device "/dev/video" -output /tmp/image.jpg

# Add the date to the bottom of the image.
convert -font helvetica -fill black -draw "text 10, 280 '`date`'" /tmp
+/image.jpg /tmp/image.jpg
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This isn't exactly what you're looking for as I am adding text to an image, but you can overlay other images too "man convert" will give you the details.