WilliamC
stranger
Nov 16, 2001, 11:50 PM
Post #4 of 7
(2387 views)
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There are actualy a great number of ways to do what you want. Heres 2.
### Method 1 using pnmscale,cjpeg,djpeg (common on most linux systems)
my $cjpeg="/usr/bin/cjpeg";
my $djpeg="/usr/bin/djpeg";
my $pnmscale="/usr/bin/pnmscale";
my $width=100; # thumbnail width
my $height=100; # " height
my $scale="1/4"; # scale for djpeg... speeds it up a tad.
# if thumbnails from smaller images look strange,
# you might try setting this down to 1/2.
$infile="/home/pics/pic1.jpg";
$outfile="/home/pics/thumbs/pic1.jpg";
#obviously make sure the thumbs directory exists....
my $pixels=$width * $height;
my $command="$djpeg -fast -scale $scale $infile | $pnmscale -pixels $pixels | $cjpeg -dct fast > $outfile";
system($command);
################################################
### Method 2 using Image::Magick
$infile="/home/pics/pic1.jpg";
$outfile="/home/pics/thumbs/pic1.jpg";
#obviously make sure the thumbs directory exists....
$convert = "convert";
$thumbnail_size = "75"; # largest width or height of thumbnail
$convert="$convert -geometry ${thumbnail_size}x${thumbnail_size}+0+0";
system("$convert $infile $outfile");
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