uploaded Image::Info, not working

[MysticFallout]

hi, i just uploaded Image::Info to my lib dir (not the regular dirs in @INC). my server doesnt have this module. and i try to run a simple script, but i get this error:

Undefined subroutine &main::image_info called at img.cgi line 17.

not sure why either. (ive never done this, always used installed modules). my script is below. comments on my horrible coding is welcome lol

#!/usr/bin/perl -w

BEGIN {
$| = 1;
open (STDERR, ">&STDOUT");
print "Content-type: text/plain\n\n";
}

require '/home/path/to/the/module/scripts/lib/Image/Info.pm';

use strict;

use CGI qw/:all/;

my $img_url = param('img_url') || "paper-04.jpg";

my $img = image_info($img_url);

my ($img_height, $img_width) = dim($img);

my $img_ext = $img->{file_ext};

my $nl = "\n\r";

print "Height: $img_height" . $nl;

print "Width: $img_width" . $nl;

print "File Extension: $img_ext";

exit(0);