title: Drawing grid lines across the image using OpenCV Python
body: <p>Using OpenCV python, I want to make a grid when I switch on my camera. Can you guys help me with a logic or code.
  Please find the image link below for better understanding.</p>
  
  <p><a href="https://i.stack.imgur.com/kjerJ.png" rel="nofollow noreferrer">Camera switched on and pointed to a floor</a></p>
  
  <p><a href="https://i.stack.imgur.com/ulMNt.png" rel="nofollow noreferrer">Grid Lines are split across the whole image</a></p>