[Digikam-devel] libkface

[Tobias Leupold]

Hi list!

I hope I can find some help here. I'm working on face detection and face 
recognition for KPhotoAlbum via libkface.

Implementing face detection was quite easy and does work nicely; I just had to 
take a look at the test/detect.cpp demo and simply did it alike. So I thought 
that the recognition feature could be implemented (of course not so but still) 
easy as well.

But alas, I'm having big trouble with face recognition. I wanted to start 
playing around with the test/recognize.cpp demo before implementing something.

Training the database with a few faces was fast and the recognition also 
worked somewhat on my test faces. But the time needed to train the database 
grew exponentially (according to a plot I made of the times using R). The 
first faces had been learned in less than a second. The 11th face took over 10 
minutes to learn already, accompanied by heavy HD use and my system even 
swapping. The time the recognition took also grew exponentially with the 
number of trained faces.

I'm pretty sure that this is not the correct way to use libkface for face 
recognition, as this would be simply unusable if I tried to add a lot of 
different people.

Unfortunately, I wasn't able to find some "working" demo or documentation 
about how to use libkface for face recognition. I had a look at the Digikam 
sources, but this is (of course) quite complicated code, so it's hard to get 
how it's done there.

Are there some docs I can read? I would really appreciate any help.

Thanks in advance!

Yours, Tobias