Advice re: Building Classifier Cascades?

[Aaron Brown]

Hey all,

I'm working on a project to do object recognition on Android, and
I'm using classifier cascades. I've gotten the training stack all set
up, and I've gotten some positive images (currently 50, from which I
am building 80,000 24x24 samples) and several thousand negatives
(7,724 to be precise). The classifiers I'm building, though, never
recognize anything, correctly or incorrectly (i.e. no real positives
or false positives).

Any advice on using LBP feature cascades and the
opencv_traincascade utility? At the moment I'm basically just poking
around in the dark trying to get stuff working.

Any pointers you can provide would be very helpful.

-AMB