[Digikam-devel] [Bug 125736] Uniquely identifying each image in a collection of images

[Gilles Caulier]

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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