https://github.com/v2e4lisp/imagephash

phash binding for perl ( http://phash.org )
https://github.com/v2e4lisp/imagephash

perl-module phash

Last synced: 12 months ago
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phash binding for perl ( http://phash.org )

• Host: GitHub
• URL: https://github.com/v2e4lisp/imagephash
• Owner: v2e4lisp
• Created: 2017-01-15T12:03:50.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2019-11-04T20:24:18.000Z (over 6 years ago)
• Last Synced: 2025-03-05T15:24:29.616Z (over 1 year ago)
• Topics: perl-module, phash
• Language: C++
• Homepage:
• Size: 1.78 MB
• Stars: 0
• Watchers: 1
• Forks: 2
• Open Issues: 1
• Metadata Files:
  • Readme: README.pod
  • Changelog: Changes

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README

          
=head1 ImagePhash

ImagePhash - Perl binding for pHash (http://phash.org)

=head1 SYNOPSIS

  use ImagePhash qw(pdiff phash);

  my $hash1 = phash("img1.jpg");

  my $hash2 = phash("img1.png");

  my $diff = pdiff($hash1, $hash2);

=head1 DESCRIPTION

Measure similarity between images.

=head2 EXPORT

None by default.

  phash($img)

Calculate a perceptual hash for an image and returns a 16-byte long lowercase hex string

which itself represents a 64bit unsinged integer.

  pdiff($hash1, $hash2)

Calculate the hamming distance between the two image hashes and returns a positive integer less than 64.

A small value means that the two images look similar to each other.

=head1 INSTALL

=over 4

=item *

For linux, libjpeg-dev and libpng-dev are requried.

=item *

For Mac, ImageMagic and libjpeg are required.

=item *

Windows is not supported.

=back

  perl Makefile.PL

  make

  make test

  make install

=head1 SEE ALSO

=over 4

=item *

http://phash.org

=item *

phash bindings for other languages https://github.com/clearscene/pHash/tree/master/bindings

=item *

How to automatically identify similar images using phash http://cloudinary.com/blog/how_to_automatically_identify_similar_images_using_phash

=back

=head1 AUTHOR

Wenjun Yan, Ewenjun.yan.dev@gmail.comE

=head1 COPYRIGHT AND LICENSE

Copyright (C) 2017 by Wenjun Yan

This library is free software; you can redistribute it and/or modify

it under the same terms as Perl itself, either Perl version 5.18.2 or,

at your option, any later version of Perl 5 you may have available.