Comment 13 for bug 507511

Well, this will be a long road until success:
I had a quick look at installing opencv (which fortunately exists
in debian etch as version 0.9.7-4).
Then libface needs some tweaking in the header files so that opencv is found,
but compiles fine after that. (I can post more details on that if needed).
Then one has to look in the examples directory of libface-0.1,
and compile
constructmat.cpp facedetect.cpp recognize.cpp train.cpp
However, it is not clear from the (essentially lacking, unless
I missed something) documentation how to use these:
Presumably it is train followed by recognize or facedetect.
For train one has to supply a file which contains names and
images of faces to be trained.
So far I only managed to get a segmentation fault...
(note to self: don't use my own pictures, but those of models,
the code seems to be picky ... ;-)

Then there is ellip-mask.jpg which provides a mask, maybe(?) used
for the input images. Whether the algorithm is able to detect
the region of interest with a face to be recognized is not clear to me.
Presumably all this will require some more digging in the original opencv
documentation.

Also note that the libface project does not appear that active,
after an initial check-in 6 weeks ago nothing happened...

OK, I will stop at this point, maybe someone else has more luck ...