Re: determining size of image

[zentara]

Just as an aside, the ImageMagick ping method is the most efficient way to get size.

#!/usr/bin/perl -w
use Image::Magick;

my $x = $ARGV[0];
my $image = Image::Magick->new;
#$image->Read($x);
#my ($w,$h)= $image->Get('columns','height');
#print $x,' is ',$w.'x'.$h,"\n";
#this is very inneficient memory wise, use Ping

($width, $height, $size, $format) = $image->Ping($x); 
print $width,"\n", $height,"\n" ,$size,"\n", $format,"\n";

and here is a script I had in my library to do an actual distortion free resize.

#!/usr/bin/perl

# I need to adjust an image to a minimum size, but without distoring i
+t, 
# so I basically want to add space evenly around the existing image. 
# Using Resize is out since that will distort the image, so I gave 
# "Composite" a shot,

use Image::Magick;
use strict;
use warnings;

my $im = Image::Magick->new();
my $bg = Image::Magick->new(size => "200x400");

my $rc = $bg->Read("xc:white");

$rc = $im->Read($ARGV[0]);
die $rc if $rc;

$rc = $im->Resize("200x400");
warn $rc if $rc;

$rc = $bg->Composite(gravity => "Center", image => $im);
warn $rc if $rc;

$rc = $bg->Write("$ARGV[0]-resized.png");
die $rc if $rc;