Using Harris Corner Detector to get the KeyPoints

Using Harris Corner Detector to get the Key Points.(within the located features)
   The key points I got by using Harris Corner Detector are much better than using SURF of SIFT.
   Though, I have to admit that the picture becomes quite scary at the beginning.

But we can easily find that all the Features we need. the eyebrow, eyes, nose and mouth are Covered with a lot of red pots.

SO i decided to use the Harris Corner Detector and Haar Cascade Classifier together to get the key points I want.
When located in to different features, I can get the uppermost, lowermost, leftmost and right most. That is. it is enough to represent the width and length of that feature.