title: Setting Image ROI to a shape other an rectangle in EMGU CV...?
body: <p>I am working on a face detection and recognition software...i succeeded in detecting the faces and recognizing them using EigenObjectRecognizer...But sometimes its giving wrong results...So i would set the roi of the faces using HaarCascade object to an ellipse so that i should be able to nullify the effect of the background...</p>
  
  <p>ellipse = new Ellipse(new PointF(face.rect.X + (face.rect.Width / 2), face.rect.Y + (face.rect.Height / 2)), new SizeF(face.rect.Width - 5, face.rect.Height - 25), 0);
  ImageFrame.Draw(ellipse, new Bgr(Color.Green), 2);</p>
  
  <p>Now it can draw an ellipse around the face...But how to set the face's roi to this ellipse...</p>
  
  <p>Please help me with this...</p>