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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.
libphash (0.9.0-2+b1) unstable; urgency=low * Binary-only non-maintainer upload for i386; no source changes. * Rebuild against new libjpeg to pick up versioned symbols -- i386 Build Daemon (murphy) <firstname.lastname@example.org> Sun, 05 Sep 2010 00:29:55 +0000 libphash (0.9.0-2) unstable; urgency=low * Added patch 01_build_on_kfreebsd.dpatch: testing libc variant rather than more»
03.27.2010 added multithreaded image, video and audio hash functions to take advantage of multiple cores/cpus. 03.24.2010 fix heap corruption error in mvp functions. fix ph_readaudio to read ogg and flac audio files in addition to .wav and .mp3. Fix bug in ph_dct_image hash to handle rgba images. 03.18.2010 add example files: build_mvptree_dctimage.cpp , add_mvptree_dct.cpp, query_m more»
update design docs with new video algorithm and api add optimized dct create one pass hash pHash Pro (detailed comments, support, one-pass hash?, multi-threaded/process, tcp/ip service?) pHash Forensics (signature, iris, fingerprint) & gui app
Format-Specification: http://svn.debian.org/wsvn/dep/web/deps/dep5.mdwn?op=file&rev=112 Name: more»