[Digikam-users] face detection scanning, but no faces come up

[Marcel Wiesweg]

> I've been playing with the new face detection on my laptop and now I
> wanted to try the same on my desktop/server.
> Both are running kubuntu 11.04, though with a different install history.
> Both are using backports and Philip Johnson's ppa for digikam 2.0.0.
> 
> On the laptop face thumbnails appear when scanning, but not on the other
> machine. Any idea what can be wrong? I suspect some plugin or library
> that is missing or not installed, but I don't know which one that could
> be...

With this problem, typically the Haar cascades are not installed. (here in 
/usr/share/opencv/haarcascades/). They are part of OpenCV but may be contained 
in a separate package.