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Old 03-11-2009, 03:30 PM
Chris Lamb
 
Default Bug#519290: ITP: libphash -- Perceptual hashing library

Package: wnpp
Severity: wishlist
Owner: Chris Lamb <lamby@debian.org>
X-Debbugs-Cc: debian-devel@lists.debian.org

* Package name : libphash
Version : 0.4
Upstream Author : Evan Klinger <eklinger@phash.org>
David Starkweather <dstarkweather@phash.org>
* URL : http://www.phash.org/
* License : GPL-3
Programming Lang: C++
Description : Perceptual hashing library

Unlike cryptographic hash functions which rely on an avalanche effect of
changes in input leading to drastic changes in the output, perceptual
hashes are "close" to one another if the inputs are visually or
auditorily similar.

Perceptual hashes have applications in searching, identifying potential
copyright infringement, locating duplicates, etc. - since a fingerprint
of a file is usually less than 1% of the original media file's size,
the fingerprint can be stored in a database and used for semantic
searching, such as finding all images that look like another.

pHash implements several perceptual hashing algorithms and provides a
C++ API to use those functions in your own programs.

(There's a demo on http://phash.org/demo/ if readers of this bug report
are interested).


Regards,

--
,'`.
: :' : Chris Lamb
`. `'` lamby@debian.org
`-
 

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