title: opencv - is facial recognition used to detect non face objects?
body: <p>Can (or maybe should) I use facial recognition software to detect non-faces?  For example, let's say I'm trying to find a can of soda in a picture of a bedroom.  If I use the haartraining algorithms on many pictures of cans of soda, will the facial recognition feature then find the can of soda in a picture of a bedroom?</p>