title: Detect bubbles in PS plastic using OpenCV
body: <p>I have a PS/Polystyrene(<a href="http://en.wikipedia.org/wiki/Polystyrene" rel="nofollow">http://en.wikipedia.org/wiki/Polystyrene</a>) plastic with color.PS is transparent material after processing.Some time while processing bubbles are made.
  I want to detect this bubbles using OpenCV.What can I do?What are the step for detect that bubbles?</p>
  
  <p>This is a bubble that I want to detect.
  <a href="http://goo.gl/frnD8Y" rel="nofollow">http://goo.gl/frnD8Y</a></p>