title: Detecting broken defective biscuits in a binary image
body: <p>I am new to OpenCV and I'm trying to count and locate broken or cracked biscuits
  (those which <em>are not perfect circles</em> as they should be) in the image.</p>
  
  <p>What kind of strategy should I follow?</p>
  
  <p>Any suggestion can help to open my mind. Regards.</p>