title: Detecting number crossing line in computer vision
body: <p>I have a college assignment which considers openCV that I have to solve but we had close to none lectures on computer vision.</p>
  
  <p>Namely we are given around 10 videos in which numbers are crossing 2 lines if they cross one line then they are added to the sum, if they cross second line they will be subtracted from the sum. </p>
  
  <p>Videos: <a href="https://drive.google.com/drive/folders/0B1ZJXQY32LBUU3FiTS14a3NZd1U" rel="nofollow noreferrer">https://drive.google.com/drive/folders/0B1ZJXQY32LBUU3FiTS14a3NZd1U</a></p>
  
  <p>What I know at the moment is that I would need to use Hough transformation to find lines. And that I will need somehow to detect the numbers.</p>
  
  <p>What my questions are how will I</p>
  
  <ul>
  <li>detect that number has crossed the line? </li>
  <li>which number has crossed it?</li>
  <li>detect overlap between numbers crossing one line?</li>
  </ul>