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Helmut Wollmersdorfer
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NAME

Image::Seek - A port of ImgSeek to Perl

Image-Seek Coverage Status Kwalitee Score CPAN version

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>

Kwalitee Score

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.