title: cvSnakeImage() OpenCV API example/documentation
body: <p><strong>Can anyone refer me any tutorial/documentation on how to use cvSnakeImage().</strong></p>
  <p>I have refered <a href="http://opencv.willowgarage.com/documentation/c/video_motion_analysis_and_object_tracking.html#snakeimage" rel="nofollow noreferrer">this</a> link but example has not been provided.</p>
  <p>I want to use this cvSnakeImage() to perfrom Active contour model on an image.</p>
  <p><img src="https://i.stack.imgur.com/PqYlU.jpg" alt="image" /></p>
  <p>The image is of eye after thresholding and the black thing is eye pupil. I want to detect (draw circle) eye pupil in this image using <strong>cvSnakeImage()</strong> (sort of constraint, I have to use this function only).</p>
  <p>C++ platform</p>
  <p><strong>Can anyone refer me any tutorial/documentation on how to use cvSnakeImage().</strong></p>