title: How to Detect Edge of lips using Opencv in iOS?
body: <p>Im new at OpenCV so please help me out. I want to detect <B> lips edge </B>using OpenCV. So can you give me some links and solution ? 
     Ive checked out normal procedure of detecting face and mouth using OpenCV but accuracy is not there. Ive used "haarcascade_mcs_mouth" to detect mouth in a picture but result was not so good. And I heard about <B> AAM </B> method , but could not get any documents regarding it. please help me...</p>