NAME

   Imager::Trim - automatic cropping for images using Imager.

VERSION

   version 0.007

SYNOPSIS

       use Imager::Trim;

       my $imager = Imager::Trim->new( file => 'image.jpg' )
           or die "Cannot open file: ", Imager::Trim->errstr();

       my $cropped_image = $imager->trim( fuzz => 50 );

       $cropped_image->write( file => 'cropped_image.jpg' );

   By default the first pixel from top left is used for automatic
   cropping, however you can provide yourself an Imager::Color for custom
   action:

       use Imager::Trim;
       use Imager::Color;

       my $white_color = Imager::Color->new("#FFFFFF");
       my $imager = Imager::Trim->new( file => 'image_with_white_background.jpg' );
       my $color_cropped_image = $imager->trim( color => $white_color );

   You can even do the cropping manually using Imager (on this example,
   we're leaving 10px extra space around the automatically cropped image,
   if possible:

       use Imager::Trim;

       my $imager = Imager::Trim->new( file => 'image.jpg' );
       my $cropped_image = $imager->trim();

       my $border = 10;
       my $top = $cropped_image->{trim_top} - $border;
       my $left = $cropped_image->{trim_left} - $border;
       my $right = $cropped_image->{trim_right} + $border;
       my $bottom = $cropped_image->{trim_bottom} + $border;

       my $manually_cropped_image = $imager->crop(
           top => ($top > 0) ? $top : 0,
           left => ($left > 0) ? $left : 0,
           right => ($right > 0) ? $right : 0,
           bottom => ($bottom > 0) ? $bottom : 0
       );

DESCRIPTION

   This module extends Imager to allow automatic cropping of images. The
   method is similar as used in image editors (e.g. "magic wand") or with
   ImageMagick's "trim" (e.g. 'convert image.jpg -fuzz 50 -background
   white -trim cropped_image.jpg').

SEE ALSO

   http://imager.perl.org/

AUTHOR

   Jussi Kinnula <[email protected]>

COPYRIGHT AND LICENSE

   This software is copyright (c) 2016 by Jussi Kinnula.

   This is free software; you can redistribute it and/or modify it under
   the same terms as the Perl 5 programming language system itself.