Comment by 501 Not Implemented for Hi!I would recommend you to take a look at this OpenCV tutorial. 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.

thanks, eye detection is far as good. I've read already a few tutorials to train my own haar. But it need a lot of time. On https://github.com/hromi/SMILEsmileD/tree/master/smileD i found a haar for detect smiles...i will try it and would to see the results :)