Answer by Martin Peris for Hi, in my program i want to detect faces, which have open eyes and maybe a smile face. Does this kind of haarcascades available?greetings

Hi! I would recommend you to take a look at this [OpenCV tutorial](http://docs.opencv.org/doc/tutorials/objdetect/cascade_classifier/cascade_classifier.html#cascade-classifier). It explains how to detect faces and eyes on images. About the *smile*, I don't know if already exists a haarcascade or lbp model for that, but you can always train your own. I hope this helps.