c# - how to decide face feature after detecting face and mouth using emgucv -


i working on emotion detection in c#, using emgucv , haarcascades xml detected face mouth , eyes, how decide emotion on face detection using code 

var faces = grayframe.detecthaarcascade(                         haar, 1.4, 4,                         haar_detection_type.do_canny_pruning,                         new size(nextframe.width / 8, nextframe.height / 8)                         )[0];   foreach (var f in faces)   {       image.draw(f.rect, new bgr(color.blue), 2);         gray.roi = f.rect;  var mouthsdetected = gray.detecthaarcascade(mouth,                            1.1, 10,                            emgu.cv.cvenum.haar_detection_type.do_canny_pruning,                            new size(20, 20));  gray.roi = rectangle.empty;    foreach (var m in mouthsdetected [0])  {       rectangle mouthrect = m.rect;       mouthrect.offset(f.rect.x, f.rect.y);       image.draw(mouthrect , new bgr(color.red), 2);  }

}

i found code here. can suggest should have find feature of faces.

  1. the easy solution pre-trained classifier "smile detector".

    string smile_cascade_name = "haarcascades\haarcascade_smile.xml";

    i don't remember if "haarcascade_smile.xml" come emgu. if not, come opencv source code. https://github.com/opencv/opencv/tree/master/data/haarcascades

  2. the hard 1 train yourself. pretty involving. can go imagenet download smile picture, sad picture , other emotion, train opencv's build-in "opencv_traincascade" function.http://coding-robin.de/2013/07/22/train-your-own-opencv-haar-classifier.html. spends me 2 weeks train 1 classifier.

you can use xml trained opencv in emgu code.


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