NAME

       Image::Seek - A port of ImgSeek to Perl

SYNOPSIS

           use Image::Seek qw(loaddb add_image query_id savedb);

           loaddb("haar.db");

           # EITHER
           my $img = GD::Image->newFromJpeg("photo-216.jpg", 1);

           # OR
           my $img = Imager->new();
           $img->open(file => "photo-216.jpg");

           # OR
           my $img = Image::Imlib2->load("photo-216.jpg");

           # Then...
           add_image($img, 216);
           savedb("haar.db");

           my @results = query_id(216); # What looks like this photo?

           remove_id(216); # Just remove id from database.

DESCRIPTION

       ImgSeek (http://www.imgseek.net/) is an implementation of Haar wavelet decomposition
       techniques to find similar pictures in a library. This module is port of the ImgSeek
       library to Perl's XS. It can deal with image objects produced by the "Imager",
       "Image::Imlib2" and "GD" libraries.

EXPORT

       None by default, but the following functions are available:

   savedb($file)
       Dumps the state of the norms and image buckets to the file $file.

   loaddb($file)
       Loads a database of image norms produced by savedb

   cleardb
       Clears the internal database. Note that "loaddb" will load into memory a bunch of data
       that you may already have - it will duplicate rather than replace this data, so results
       will be skewed if you load a database multiple times without clearing it in between.

   add_image($image, $id)
       Adds the image object to the database, keyed against the numeric id $id. This will compute
       the Haar transformation for a 128x128 thumbnail of the image, and then store its norms
       into a database in memory.

   remove_id($id)
       remove id from database, and you should "savedb" to save the changed database.

   query_id($id[, $results))
       This queries the internal database for pictures which are "like" number $id. It returns a
       list of $results results (by default, 10); a result is an array reference. The first
       element is the ID of a picture, the second is a score. So for example:

           query_id(2481, 5)

       returns, in a shoot I have, the following:

                 [ 2481, -38.3800003528595 ],
                 [ 2480, -37.5519620793145 ],
                 [ 2478, -37.39896965962   ],
                 [ 2479, -37.2777427507208 ],
                 [ 2584, -10.0803730081134 ],
                 [ 2795, -7.89326129961427 ]

       Notice that the scores go the opposite way to what you might imagine: lower is better. The
       results come out sorted, and the first result is the thing you queried for.

   addImage($id, $reds, $greens, $blues)
       Internally used.

   add_image_magick($image, $id)
       Internally used.

   add_image_gd($image, $id)
       Internally used.

   add_image_imager($image, $id)
       Internally used.

   add_image_imlib2($image, $id)
       Internally used.

   constant
       Internally used.

   queryImgID
       Internally used.

   removeID
       Internally used.

   results
       Internally used.

SEE ALSO

       http://www.imgseek.net/

SOURCE REPOSITORY

       <http://github.com/wollmers/Image-Seek>

MAINTAINER

       Helmut Wollmersdorfer <helmut.wollmersdorfer@gmail.com>

AUTHOR

       Simon Cozens, <simon@cpan.org<gt> Lilo Huang, <kenwu@cpan.org> Helmut Wollmersdorfer,
       <helmut.wollmersdorfer@gmail.com>

       All the clever bits were written by Ricardo Niederberger Cabral; Simon Cozens just mangled
       them to wrap Perl around them.

COPYRIGHT AND LICENSE

       Copyright (C) 2005 by Simon Cozens, 2008 by Lilo Huang, 2015 Helmut Wollmersdorfer

       This library is free software; as it is a derivative work of imgseek, this library is
       distributed under the same terms (GPL) as imgseek.