[Digikam-devel] [Bug 125736] Uniquely identifying each image in a collection of images
Gilles Caulier
caulier.gilles at kdemail.net
Tue Dec 19 13:45:49 GMT 2006
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http://bugs.kde.org/show_bug.cgi?id=125736
------- Additional Comments From caulier.gilles kdemail net 2006-12-19 14:45 -------
Yes finding a dupplicate picture is not really integrated in digiKam with FindDuplicate kipi-plugin.
A possiblility to find duplicate image is to use the "Haar" algorithm witch is based on wavelet theory. This one is more powerfull than MD5 and is used into ImgSeek program :
http://imgseek.cvs.sourceforge.net/imgseek/imgseek/imgSeekLib/haar.cpp?revision=1.10&view=markup
You can see a paper about Haar stuff here :
http://scien.stanford.edu/class/ee368/projects2001/dropbox/project01/method_retrieval.html
http://en.wikipedia.org/wiki/Haar_wavelet
In the past, before to create the FindDupplicate plugin (witch is based on another algorithm used in ShowImg core program), i have proposed to integrate "Haar" algorithm in digiKam core and store the result matrix for each image in database, but Renchi have been opposed because it out of digiKam subject.
I think it different now. What do you think about ?
Gilles
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