title: What is python equivalent of CvTermCriteria in OpenCV 2.3.1 and above?
body: <p>I am using python bindings of OpenCV 2.3.1 and I'm stuck. I'm trying to make an LK tracker. I'm using cv2.calcOpticalFlowPyrLK() <a href="http://opencv.willowgarage.com/documentation/python/video_motion_analysis_and_object_tracking.html?highlight=opticalflow#calcopticalflowpyrlk" rel="noreferrer">http://opencv.willowgarage.com/documentation/python/video_motion_analysis_and_object_tracking.html?highlight=opticalflow#calcopticalflowpyrlk</a></p>
  
  <p>It that one of the arguments is criteria. in C++ it's CvTermCriteria. But I am unable to find it's python equivalent. I guess they have discontinued it after OpenCV 2.0. What else can I use? It says <em>criteria.maxCount</em> or <em>criteria.epsilon</em>. But I can't find that either. Any suggestions ?</p>