Human bodies are much more difficult to detect than front human face using the OpenCV haar detector.

i was just working on this yesterday as i am preparing a workshop about this topic...

did you use some other haarcascade files to tracking other parts than your face ?
i found some, and they all worked pretty well...
i uploaded them for you

http://db.tt/ptDGTOn

but know as this topic came up, does somebody know a good haarcascade collection or database ?

And another question, maybe you can already answer scmurray.
Did you find a good way to track the face but get points for the eyes, nose and mouth as well? the standart opcenCV Face detection only returns the whole face...
one way would be to combine different haarcascade files in one sketch but i am wondering if there is a better way to do this.

guessing where they might appear was one of my thoughts, probably works in most cases as eyes and mouth rarely change their position :) but it probably wont work when people start to tilt their heads to the left or right... also it would be nice to track the mimics somehow, position of the eyebrows, or size of the mouth etc...

hmm you are right, it still uses openCV 1, but version 2.1 is already available...
would be nice if there would ever be an update of the processing library to make use of some of the new features.

Thanks, everyone.  Thanks, cedrickiefer, for the cascade files.  I'm using the OpenCV for Processing library, and I'm not sure how to plug those into it, but I'll experiment.  For the current project, I gave up and used face tracking, then estimated where the user's lower body would be (if they are standing normally in front of the camera).

Hey guys,