 <p>The default Haar cascade trainings are:</p> <ul> <li>haarcascade_eye.xml</li> <li>haarcascade_eye_tree_eyeglasses.xml</li> <li>haarcascade_frontalcatface.xml</li> <li>haarcascade_frontalcatface_extended.xml</li> <li>haarcascade_frontalface_alt.xml</li> <li>haarcascade_frontalface_alt_tree.xml</li> <li>haarcascade_frontalface_alt2.xml</li> <li>haarcascade_frontalface_default.xml</li> <li>haarcascade_fullbody.xml</li> <li>haarcascade_lefteye_2splits.xml</li> <li>haarcascade_licence_plate_rus_16stages.xml</li> <li>haarcascade_lowerbody.xml</li> <li>haarcascade_profileface.xml</li> <li>haarcascade_righteye_2splits.xml</li> <li>haarcascade_russian_plate_number.xml</li> <li>haarcascade_smile.xml</li> <li>haarcascade_upperbody.xml</li> </ul> <p>If you need a custom one, you can train your own following <a href="http://docs.opencv.org/master/dc/d88/tutorial_traincascade.html" rel="nofollow">these instructions</a></p>