Eye and Mouth detection from face using haar-cascades

Question

I have extracted eyes and mouth from the face, but want to extract emotions from eyes and mouth.. However, mouth is not detected properly.. This is my code..

Answer 1

I would try to look for a mouth in a face rectangle, instead of checking the hole picture.

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)
 {
    //draw the face detected in the 0th (gray) channel with blue color
    image.Draw(f.rect, new Bgr(Color.Blue), 2);


     //Set the region of interest on the faces
     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);
     }
   }